OCaml Changelog

• Allow to mark directories as data_only_dirs without including them as dirs (#2619, fix #2584, @rgrinberg)

• Fix reading .install files generated with an external --build-dir. (#2638, fix #2629, @rgrinberg)

Fixed

• Fix a bug where opam submit would fail if the opam files had no description (#165, @NathanReb)
• Fix a bug where opam files could be improperly tempered with while building the distribution tarball (#168, @NathanReb)

Bugs fixed

• Build on OCaml 4.09 (#383, Anil Madhavapeddy).
• Handle OCaml 4.08 type and module substitutions (#381, Jon Ludlam).
• Parser: better trimming of leading whitespace in code blocks (#370, Jules Aguillon).
• Parser: allow references to operators containing : characters (#384, reported Sylvain Le Gall).
• HTML: emit <meta generator> again (#378, Daniel Bünzli).
• CLI: odoc html-targets was ignoring deeply nested modules (#379, Daniel Bünzli).
• Fix bad internal usage of List.iter2 (#376, Yotam Barnoy).

• Add support for OCaml 4.09.0 (@octachron @avsm, #299)

• compatibility with OCaml 4.08.0 (new attributes, monadic lets...)
• lots of smaller indentation fixes (module types, empty variants...)
• more reliable "inplace" mode (preserving symlinks and permissions)
• XDG compatibility (e.g. config file below ~/.config)
• support for "cinaps" comments (indent as code comments that start with (*$)
• API: IndentBlock.is_at_top now returns true for top-level expressions

• Fix a ppx hash collision in watch mode (#2546, fixes #2520, @diml)

• Remove the optimisation of passing -nodynlink for executables when not necessary. It seems to be breaking things (see #2527, @diml)

• Fix invalid library names in dune-package files. Only public names should exist in such files. (#2558, fix #2425, @rgrinberg)

General

• Remove camlp4 remnants (@XVilka, #290) (@kandu, #293)
• Allow to statically link utop (@diml, #285) (@hongchangwu, #286)

Misc

• Remove broken elisp (m-plamann, #292)
• Add OCaml 4.08 build in Travis CI (XVilka, #291)

• Fix config file dependencies of ocamlformat (#2471, fixes #2464, @nojb)

• Cleanup stale directories when using (source_tree ...) in the presence of directories with only sub-directories and no files (#2514, fixes #2499, @diml)

• Improve: generalize API of Config_option (#952, @gpetiot)
• Improve: new 'before' value for option 'sequence-style' (#947, @gpetiot)
• Project: create issue templates (#950, @gpetiot)
• Improve: tidying up Conf.ml (#951, @gpetiot)
• Improve: parse code in comments (#934, @gpetiot)
• Fix comments' placement (do not look at loc_stack) (#923, @gpetiot)
• Doc: setting flags in .ocamlformat (#944, @gpetiot)
• Doc: enable-outside-detected-project necessary for global conf file (#948, @gpetiot)
• Fix hashbang handling (#946, @hhugo)
• Improve: support Shell-style regular expressions in .ocamlformat-ignore and .ocamlformat-enable files (#937, @gpetiot)
• Improve: force break after an infix op only if followed by another one (#935, @gpetiot)
• Fix break-separators=after-and-docked for lists and arrays (#931, @gpetiot)
• Improve: deprecate option break-string-literals and change its default value (#932, @gpetiot)
• Improve: break with labeled arrow type (#933, @gpetiot)
• Improve: disambiguate non-breaking matching structures (#857, @gpetiot)
• Improve: warning 50 handled like an internal error (#930, @gpetiot)
• Fix break-separators=after-and-docked for record patterns (#929, @gpetiot)
• Fix closing parenthesis indentation when on separate line (#928, @gpetiot)
• Improve: split the Conf.ml file (#920, @gpetiot)
• Fix position of comments after anonymous functions (#919, @gpetiot)
• Fix: comments around disabled block (#918, @hhugo)
• Fix monadic bindings (new 4.08 syntax) (#911, @gpetiot)
• Fix attribute when break-infix-before-func=false (#916, @gpetiot)
• Improve: update ocamlformat_reason opam file to 2.0 format (#913, @avsm)
• Fix attributes of modules (#910, @gpetiot)
• Fix docstrings of exceptions (#909, @gpetiot)
• Fix attribute location in Normalization (#908, @gpetiot)
• Improve: add the 'ocamlformat-file-kind' argument to the emacs hook (#905, @gpetiot)
• Improve: dunify testsuite (#881, @trRefis)
• Improve: add trailing semicolon inside record when break-separators=after-and-docked (#899, @gpetiot)
• Fix compilation with 4.06 and 4.07 (#898, @gpetiot)
• Improve: add a new way to indicate multiline delimiters (#876, @trefis)
• Fix inconsistency of break-separators=after-and-docked for record expressions (#856, @gpetiot)

• Bump AST to 4.08 (#80, @xclerc)

• Report errors according to the value of OCAML_ERROR_STYLE and OCAML_COLOR in the standalone driver (#83, @NathanReb)

• Don't select all local implementations in dune utop. Instead, let the default implementation selection do its job. (#2327, fixes #2323, @TheLortex, review by @rgrinberg)

• Check that selected implementations (either by variants or default implementations) are indeed implementations. (#2328, @TheLortex, review by @rgrinberg)

• Don't reserve the Ppx toplevel module name for ppx rewriters (#2242, @jeremiedimino)

• Redesign of the library variant feature according to the #2134 proposal. The set of variants is now computed when the virtual library is installed. Introducing a new external_variant stanza. (#2169, fixes #2134, @TheLortex, review by @jeremiedimino)

• Add proper line directives when copying .cc and .cxx sources (#2275, @rgrinberg)

• Fix error message for missing C++ sources. The .cc extension was always ignored before. (#2275, @rgrinberg)

• Add $ dune init project subcommand to create project boilerplate according to a common template. (#2185, fixes #159, @shonfeder)

• Allow to run inline tests in javascript with nodejs (#2266, @hhugo)

• Build ppx.exe as compiling host binary. (#2286, fixes #2252, @toots, review by @rgrinberg and @jeremiedimino)

• Add a cinaps extension and stanza for better integration with the cinaps tool tool (#2269, @jeremiedimino)

• Allow to embed build info in executables such as version and list and version of statically linked libraries (#2224, @jeremiedimino)

• Set version in META and dune-package files to the one read from the vcs when no other version is available (#2224, @jeremiedimino)

• Add a variable %{target} to be used in situations where the context requires at most one word, so %{targets} can be confusing; stdout redirections and "-o" arguments of various tools are the main use case; also, introduce a separate field target that must be used instead of targets in those situations. (#2341, @aalekseyev)

• Fix dependency graph of wrapped_compat modules. Previously, the dependency on the user written entry module was omitted. (#2305, @rgrinberg)

• Allow to promote executables built with an executable stanza (#2379, @jeremiedimino)

• When instantiating an implementation with a variant, make sure it matches virtual library's list of known implementations. (#2361, fixes #2322, @TheLortex, review by @rgrinberg)

• Add a variable %{ignoring_promoted_rules} that is true when --ingore-promoted-rules is passed on the command line and false otherwise (#2382, @jeremiedimino)

• Fix a bug in future_syntax where the characters @ and & were not distinguished in the names of binding operators (let@ was the same as let&) (#2376, @aalekseyev, @jeremiedimino)

• Workspaces with non unique project names are now supported. (#2377, fix #2325, @rgrinberg)

• Improve opam generation to include the dune dependencies with the minimum constraint set based on the dune language version specified in the dune-project file. (2383, @avsm)

• The order of fields in the generated opam file now follows order preferred in opam-lib. (@avsm, #2380)

• Fix coloring of error messages from the compiler (@jeremiedimino, #2384)

• Add warning 66 to default set of warnings starting for dune projects with language verison >= 1.11 (@rgrinberg, @jeremiedimino, fixes #2299)

• Add (dialect ...) stanza (@nojb, #2404)

• Add a --context argument to dune install/uninstall (@jeremiedimino, #2412)

• Do not warn about merlin files pre 1.9. This warning can only be disabled in 1.9 (#2421, fixes #2399, @emillon)

• Add a new inline_tests field in the env stanza to control inline_tests framework with a variable (#2313, @mlasson, original idea by @jeremiedimino, review by @rgrinberg).

• New binary kind js for executables in order to explicitly enable Javascript targets, and a switch (explicit_js_mode) to require this mode in order to declare JS targets corresponding to executables. (#1941, @nojb)

• backend
  • ** globbing in .merlin won't look into hidden directories (starting with a '.') (by Daniel Bünzli, #990)
  • fallback to "/dev/null" configuration for findlib
  • better 4.08 support:
    • support for letop (let+, and+, ...) (#986)
    • fix parsing recovery for 4.08 constructions (#987)
    • catch an exception raised by 4.08 Printtyp trying to rename a persistent identifier (#991)
  • locate: treat local locations differently from external locations (coming from a cmi), this fixes "jump to definition" on mutually recursive bindings (#984)
  • when completing an infix operator in a sub-module, wrap with () (#992)
  • disable arity checks on externals (for Bucklescript compatibility)
  • remove parser preprocessing (simplify compilation for OCaml < 4.08) (#997)
• editor modes
  • emacs
    • fix position computation in presence of tabs or multi-byte characters (#981)
    • log arguments in "merlin-debug-last-commands" (#981)
  • vim
    • install reason.vim file (by Hezekiah M. Carty, #974)

Fixed

• Fix a bug where file presence lint check wouldn't be run for CHANGES, LICENSE and README (#161, @NathanReb)

Changed

• Add headers to better distinguish various dune-release logs such as user prompts and informational logs

• Initial support for 4.09, tested with 4.09+beta1 (#76, @hhugo)
• When encoding errors into the AST, duplicate the error message for "ocaml.error" nodes for OCaml versions < 4.08 (#75, @xclerc)

• Improve: align cases horizontally (#883, @gpetiot)
• Improve: option exp-grouping (#828, @gpetiot)
• Improve: synchronize Format with upstream stdlib (#885, @gpetiot)
• Improve: break-string-literals=newlines-and-wrap (#896, @gpetiot)
• Improve: specify break hint in fits_breaks (#894, @gpetiot)
• Improve: option break-before-in (#892, @gpetiot)
• Fix break-string-literals=newlines (#887, @gpetiot)
• Improve: Implement break-fun-sig without Location.is_single_line (#886, @Julow)
• Format gen_version.ml (#893, @hhugo)
• Improve: switch to ast 4.08 (#831, @hhugo)
• Fix formatting of arguments when break-fun-decl=fit-or-vertical (#884, @gpetiot)
• Test: extend max_indent test (#878, @trefis)
• Test: break_cases_normal_indent.ml is a symlink on break_cases_fit.ml (#879, @gpetiot)
• Improve unicode text length computation (#816, @gpetiot)
• Add an option to control the indentation of nested matches (#870, @trefis)
• Fix: properly interpret indicate-multiline-delimiters for if-then-elses (#874, @trefis)
• Enable warning 9 (#875, @hhugo)
• Fix unstable comment in let%ext (#873, @gpetiot)
• Improve: option max-indent (#841, @gpetiot)
• Improve: option nested-match=align (#827, @gpetiot)
• Fix dropped attributes in with_constraints (#846, @gpetiot)
• Fix dropped comments in list patterns and module types (#866, @gpetiot)
• Fix comment dropped in object (#849, @gpetiot)
• Fix inconsistency of break-separators for wildcards in match cases (#855, @gpetiot)
• Improve: new options to support 'with' and 'strict_with' (ocp-indent) (#853, @gpetiot)
• Improve: .ocamlformat-enable files listing files to format when ocamlformat is disabled (#854, @gpetiot)
• Check that all locations have been considered during formatting (#864, @hhugo)
• clean Hashtbl.Poly (#862, @hhugo)
• Fix: test.sh (#858, @hhugo)
• cleanup Cmts.ml (#861, @hhugo)
• Clean: Cleanup usage of Poly (#860, @hhugo)
• Fix: rename sexp_list into list (#859, @hhugo)
• Fix vim instructions (#852, @naartjie)
• Improve: options extension-indent and stritem-extension-indent (#840, @gpetiot)
• Fix comment dropped in field alias (#848, @gpetiot)
• Fix pro position for with_constraints (#847, @gpetiot)
• Improve: finer space-around-exp options (#837, @gpetiot)
• Improve: preserve blank lines in conventional and sparse profiles (#838, @gpetiot)
• Improve: don't fit tag-only comments after val declarations (#836, @Julow)
• Improve speed with ofday_unit_tests_v1.ml (#833, @hhugo)
• Fix exception when calling String.sub (#832, @gpetiot)
• Improve: implement doc-comments and doc-comments-tag-only for every items (#746, @Julow)
• Improve: Add field-space=tight-decl (#829, @Julow)
• Improve: make Sugar.list_exp and Sugar.list_pat tail-recursive (#823, @gpetiot)
• Improve: options 'let-binding-indent', 'type-decl-indent' and 'indent-after-in' (#822, @gpetiot)
• Fix: performance issue with deep asts (#826, @hhugo)
• Improve: preserve blank lines in sequences (#814, @gpetiot)
• Improve: tidying Fmt_ast.ml (#821, @gpetiot)
• Improve: space before type constraint in record (#819, @gpetiot)
• Improve: break-cases=fit-or-vertical (#820, @gpetiot)
• Improve: remove break before ending paren for anonymous functions (#818, @gpetiot)
• Improve: preserve the position of type annotation in bindings (#815, @gpetiot)
• Improve: preserve record type annot (#812, @gpetiot)
• Fix break before ending paren (#801, @gpetiot)
• Improve: better consistency between structures and signatures (#803, @gpetiot)
• Fix let module sparse (sparse mode only for module applications) (#809, @gpetiot)
• Improve: change formatting of newtypes (#811, @gpetiot)
• Improve: break-cases-all shouldn't break nested patterns (#810, @gpetiot)
• Fix: sugarized extensions (#805, @gpetiot)
• Improve: tidying Fmt_ast (#808, @gpetiot)
• Fix cmt in empty structure (#804, @gpetiot)
• Remove dead link to preset profiles (#806, @andschwa)
• Improve: break with type constraints (#797, @gpetiot)
• Fix colon break module type functor (#802, @gpetiot)
• Improve: K&R style for if-then-else (#787, @gpetiot)
• Improve: new option break-fun-sig (#785, @gpetiot)
• Improve: indentation consistency of '<-' and := (#780, @gpetiot)
• Fix: functor application and break-struct wrap incorrectly (#786, @gpetiot)
• Break after anonymous function arrow after infix op (#781, @gpetiot)
• Fix: type extension (#782, @gpetiot)
• Improve: Fmt.noop (#784, @gpetiot)
• Fix extension of value binding (#779, @chrismamo1)
• Improve: less sensitivity to concrete syntax (#767, @gpetiot)
• Fix missing space before attribute on includes (#775, @Julow)
• Improve: new option let-module (#768, @gpetiot)
• Improve: --disable-outside-detected-project is set by default (#761, @gpetiot)
• Fix weird parens break (#751, @gpetiot)
• Fix: if $XDG_CONFIG_HOME is either not set or empty, use $HOME/.config (#758, @gpetiot)
• Fix: --use-file/--impl/--intf should override file extension (#774, @gpetiot)
• Improve: less breaks for break-cases=all but correctly breaks or-patterns (#762, @gpetiot)
• Remove unecessary break on module pack constraints with with-constraints (#739, @Julow)
• Fix inconsistent break before module signature (#755, @gpetiot)
• Fix indentation of functor argument (#773, @gpetiot)
• Tidying fmt ast (#748, @gpetiot)
• Fix nested parens with no break infix before func (#760, @gpetiot)
• Provide an mli for Compat (#772) (hhugo) -Fix non-wrapping asterisk prefixed cmts (#759, @gpetiot)
• Support for OCaml 4.08 (#763, @hhugo)
• Fix module type functor (#716, @gpetiot)
• Small cleanup (#764, @hhugo)
• Fix: update ocamlformat-help.txt (follow up on #752) (#756, @gpetiot)
• Fix module pack and functor (#735, @Julow)
• Fix grammar: it's -> its (@anmonteiro)
• Improve: support --name with --inplace (#740, @jberdine)
• Fix: dropped comments for pexp_record (#743, @hhugo)
• Improve: comments arround attributes, fix #726 (#742, @hhugo)
• Update README for new profiles (#738, @jberdine)
• Remove deprecated 'default' profile (#736, @jberdine)
• Fix extra parens around ext match (#733, @gpetiot)
• Improve: factorize with compose_module (#729, @gpetiot)
• Test: exclude gen_version.ml from test (#732, @jberdine)
• Improve: make gen_version an ocaml script (#664, @hhugo)

Bugs fixed

• Messy formatting in large definitions due to lack of <span>s (#360, Thomas Refis).
• Missing table of contents on .mld pages (#361, Rizo Isrof).
• Missing space before polymorphic class names (#339, Kevin Ji).
• Module type definitions printed with : instead of = (#344, Geoff Reedy).
• Conjunctive types printed with * instead of & (#353, Florian Angeletti).
• Type extensions (+=) printed without CSS classes found in other items (#348, reported Stéphane Lavergne).
• High memory usage on large codebases (#361, Thomas Refis).
• Build: double underscores in internal filenames (#357, Thomas Refis).
• Development: test suite assumed that html5-tidy supports --mute (#345, Geoff Reedy).
• Internal: refactored AST (#351, #364, Jules Aguillon).

• Small cleanup (#764, @hhugo)
• Support for OCaml 4.08 (#763, @hhugo)

• backend
  • catch findlib initialization failures and keep going on

• Add --force-output option to force generation of diff file (#118 @clecat)
• Support OCaml 4.08.0 (#121 @xclerc)
• README and documentation fixes (#122 #118 @andreypopp @clecat @samoht)
• Use latest ocaml-migrate-parsetree interfaces (@avsm)

• Fix a bug in documentation publication where under certain circumstances the doc would be published in a _html folder instead of being published at the root of gh-pages (#157, @NathanReb)

• Restricted the set of variables available for expansion in the destination filename of install stanza to simplify implementation and avoid dependency cycles. (#2073, @aalekseyev, @jeremiedimino)

• [menhir] call menhir from context root build_dir (#2067, @ejgallego, review by @jeremiedimino, @rgrinberg)

• [coq] Add coq.pp stanza to help with pre-processing of grammar files (#2054, @ejgallego, review by @rgrinberg)

• Add a new more generic form for the promote mode: (promote (until-clean) (into <dir>)) (#2068, @jeremiedimino)

• Allow to promote only a subset of the targets via (promote (only <pred>)). For instance: (promote (only *.mli)) (#2068, @jeremiedimino)

• Improve the behavior when a strict subset of the targets of a rule is already in the source tree for projects using the dune language < 1.10 (#2068, fixes #2061, @jeremiedimino)

• With lang dune >= 1.10, rules in standard mode are no longer allowed to produce targets that are present in the source tree. This has been a warning for long enough (#2068, @jeremiedimino)

• Allow %{...} variables in pps flags (#2076, @mlasson review by @jeremiedimino and @aalekseyev).

• Add a 'cookies' option to ppx_rewriter/deriver flags in library stanzas. This allow to specify cookie requests from variables expanded at each invocation of the preprocessor. (#2106, @mlasson @jeremiedimino)

• Add more opam metadata and use it to generate .opam files. In particular, a package field has been added to specify package specific information. (#2017, #2091, @avsm, @jonludlam, @rgrinberg)

• Clean up the special support for findlib.dynload. Before, Dune would simply match on the library name. Now, we only match on the findlib package name when the library doesn't come from Dune. Someone writing a library called findlib.dynload with Dune would have to add (special_builtin_support findlib_dynload) to trigger the special behavior. (#2115, @jeremiedimino)

• Install the future_syntax preprocessor as ocaml-syntax-shims.exe (#2125, @rgrinberg)

• Hide full command on errors and warnings in development and show them in CI. (detected using the CI environment variable). Commands for which the invocation might be omitted must output an error prefixed with File . Add an --always-show-command-line option to disable this behavior and always show the full command. (#2120, fixes #1733, @rgrinberg)

• In dune-workspace files, add the ability to choose the host context and to create duplicates of the default context with different settings. (#2098, @TheLortex, review by @jeremiedimino, @rgrinberg and @aalekseyev)

• Add support for hg in dune subst (#2135, @jeremiedimino)

• Don't build documentation for implementations of virtual libraries (#2141, fixes #2138, @jonludlam)

• Fix generation of the -pp flag in .merlin (#2142, @rgrinberg)

• Make dune subst add a (version ...) field to the dune-project file (#2148, @jeremiedimino)

• Add the %{os_type} variable, which is a short-hand for %{ocaml-config:os_type} (#1764, @jeremiedimino)

• Allow enabled_if fields in library stanzas, restricted to the %{os_type}, %{model}, %{architecture}, %{system} variables (#1764, #2164 @jeremiedimino, @rgrinberg)

• Fix chdir on external and source paths. Dune will also fail gracefully if the external or source path does not exist (#2165, fixes #2158, @rgrinberg)

• Support the .cc extension fro C++ sources (#2195, fixes #83, @rgrinberg)

• Run ocamlformat relative to the context root. This improves the locations of errors. (#2196, fixes #1370, @rgrinberg)

• Fix detection of README, LICENSE, CHANGE, and HISTORY files. These would be undetected whenever the project was nested in another workspace. (#2194, @rgrinberg)

• Fix generation of .merlin whenever there's more than one stanza with the same ppx preprocessing specification (#2209 ,fixes #2206, @rgrinberg)

• Fix generation of .merlin in the presence of the copy_files stanza and preprocessing specifications of other stanazs. (#2211, fixes #2206, @rgrinberg)

• Run refmt from the context's root directory. This improves error messages in case of syntax errors. (#2223, @rgrinberg)

• In .merlin files, don't pass -dump-ast to the future_syntax preprocessor. Merlin doesn't seem to like it when binary AST is generated by a -pp preprocessor. (#2236, @aalekseyev)

• dune install will verify that all files mentioned in all .install files exist before trying to install anything. This prevents partial installation of packages (#2230, @rgrinberg)

• backend

  • interpret -pp flag
  • backtrack warnings in all versions, not just 4.06
  • silence C compiler warnings (by David Allsopp and Bernhard Schommer)
  • remove sturgeon support
  • allow to select sections to log
  • better error message on ocaml version mismatch
  • locate:
    • handle functors and functor applications
    • do not use the location coming from the environment
  • tweaked caching policy
  • fix environment when a file disappears
  • fix -short-paths handling of classes and class types (by Leo White)
  • don't select deprecated paths in -short-paths (by Leo White)
  • return type info in outline query (by Andrey Popp)
  • properly handle new lines in the lexer
  • better tracking of errors reported by the parser and by preprocessors
  • add support for OCaml 4.08
  • tweaked the recovery strategy in presence of syntax errors
  • timing information in replies now includes wall clock time.
  • dump command can new dump the parsetree post preprocessing

• editors modes

  • emacs

    • fix merlin-xref.el install (by Emilio Jesus Gallego Arias)
    • keep labels matching the prefix the user has typed rather than dropping them (by Mitchell Plamann)
    • remove unused merlin--overlay function (by Wilfred Hughes)
    • show the number of errors in the modline (by Wilfred Hughes)
    • call a logger on the client side if one is defined
    • allow user to disable completion inside comments and strings
    • show errors and types even when buffer is narrowed (by Wilfred Hughes)
    • make sure PATH is updated when merlin-command is 'opam

  • vim

    • better FindBinary
    • make the log buffer a scratch buffer (by Tom Johnson)
    • execute buffer switching silently (by Fabian)
    • restore view after updating merlin type buffer (by Fabian)

• testsuite

  • Switched to mdx with cram syntax.

• Add confirmation prompts in some commands. (#144, #146, @NathanReb)
• Use github returned archive URL instead of guessing it. Fixes a bug when releasing a version with URL incompatible characters to github. (#143, @NathanReb)
• Add logs to better describe commands behaviour. (#141, #137, #135, #150, #153, @NathanReb)
• Fix a bug when publishing documentation to a repo for the first time (#136, @NathanReb)
• Allow to submit package to a different opam-repository hosted on github. (#140, #152, @NathanReb)
• Use dune subst for watermarking. (#147, @NathanReb)
• Fix linting step so it checks for CHANGES, LICENSE and README again

Oops, we went looking but didn't find the changelog for this release 🙈

Oops, we went looking but didn't find the changelog for this release 🙈

General

• Better support for wide and combined glyph (@kandu)
• Added tips for simpe prompt without fancy features (Marshall Abrams, #279)
• Correct quoting for Windows command shell (Dmitry Bely, #272)

Additions

• 4.08 compatibility (#284)
• module UTop: add get_load_path and set_load_path to manage the include directories (#284)

Breaking

• module UTop: val load_path : string list ref is removed (#284)

• Make sure opening Ast_408 doesn't shadow Int or Misc (#71, @hhugo)
• Fix a couple of issues related to upgrading the AST from 4.07 to 4.08 (#71, @hhugo)

• Put back library variants in development mode. We discovered a serious unexpected issue and we might need to adjust the design of this feature before we are ready to commit to a final version. Users will need to write (using library_variants 0.1) in their dune-project file if they want to use it before the design is finalized. (#2116, @diml)

• Forbid to attach a variant to a library that implements a virtual library outside the current project (#2104, @rgrinberg)

• Fix a bug where dune install would install man pages to incorrect paths when compared to opam-installer. For example dune now installs (foo.1 as man1/foo.1) correctly and previously that was installed to man1/man1/foo.1. (#2105, @aalekseyev)

• Do not fail when a findlib directory doesn't exist (#2101, fix #2099, @diml)

• [coq] Rename (coqlib ...) to (coq.theory ...), support for coqlib will be dropped in the 1.0 version of the Coq language (#2055, @ejgallego)

• Fix crash when calculating library dependency closure (#2090, fixes #2085, @rgrinberg)

• Clean up the special support for findlib.dynload. Before, Dune would simply match on the library name. Now, we only match on the findlib package name when the library doesn't come from Dune. Someone writing a library called findlib.dynload with Dune would have to add (special_builton_support findlib_dynload) to trigger the special behavior. (#2115, @diml)

• Include permissions in the digest of targets and dependencies (#2121, fix #1426, @rgrinberg, @xclerc)

• Fix .install files not being generated (#2124, fixes #2123, @rgrinberg)

• Get rid of the ocamlbuild plugin. Nobody is using it in opam and it is more work to maintain (#63, @diml)
• Set Location.input_name to the original filename when reading a binary AST (#66, @diml)
• Add support 4.08 (#70, @xclerc)

• Set Location.input_name to the original filename when reading a binary AST (#.., @diml)

• Fix invocation of odoc to add previously missing include paths, impacting mld files that are not in directories containing libraries (#2016, fixes #2007, @jonludlam)

• Remove assert false in favor of error message. (#125, @ejgallego)
• Embed a 'version: "$release-version"' in each opam file of the current directory to get reproducible releases (#128, #129, @hannesm)
• Generate sha256 and sha512 checksums for release (#131, @hannesm)
• Grammar fixes (#132, @anmonteiro)
• Handle doc fields with no trailing slash (#133, @yomimono)

• Warn when generated .merlin does not reflect the preprocessing specification. This occurs when multiple stanzas in the same directory use different preprocessing specifications. This warning can now be disabled with allow_approx_merlin (#1947, fix #1946, @rgrinberg)

• Watch mode: display "Success" in green and "Had errors" in red (#1956, @emillon)

• Fix glob dependencies on installed directories (#1965, @rgrinberg)

• Add support for library variants and default implementations. (#1900, @TheLortex)

• Add experimental $ dune init command. This command is used to create or update project boilerplate. (#1448, fixes #159, @shonfeder)

• Experimental Coq support (fix #1466, @ejgallego)

• Install .cmi files of private modules in a .private directory (#1983, fix #1973 @rgrinberg)

• Fix dune subst attempting to substitute on directories. (#2000, fix #1997, @rgrinberg)

• Do not list private modules in the generated index. (#2009, fix #2008, @rgrinberg)

• Warn instead of failing if an opam file fails to parse. This opam file can still be used to define scope. (#2023, @rgrinberg)

• Do not crash if unable to read a directory when traversing to find root (#2024, @rgrinberg)

• Do not exit dune if some source directories are unreadable. Instead, warn the user that such directories need to be ignored (#2004, fix #310, @rgrinberg)

• Fix nested (binaries ..) fields in the env stanza. Previously, parent binaries fields would be ignored, but instead they should be combined. (#2029, @rgrinberg)

• Allow "." in c_names and cxx_names (#2036, fix #2033, @rgrinberg)

• Format rules: if a dune file uses OCaml syntax, do not format it. (#2014, fix #2012, @emillon)

• Admin: remove CHANGES.md that was essentially git log (@jberdine)
• Admin: simplify release procedure (@jberdine)
• Build: fix ocaml version constraint, need 4.06 (@jberdine)
• Improve: make gen_version an ocaml script (@hhugo)
• Improve: fix associativity of Pexp_setfield (#725, @jberdine)
• Improve: normalize setfield and setinstvar (#720, @gpetiot)
• Remove: deprecated config file syntax parsing (#715, @jberdine)
• Improve: put the equal first for ocp-indent-compat (#717, @gpetiot)
• Fix: parse docstrings once (#713, @gpetiot)
• Improve: new profiles conventional and ocamlformat (#663, @gpetiot)
• Revert module indentation (#714, @gpetiot)
• Fix infix wrap (#691, @gpetiot)
• Fix doc comments tag only when docstring parsing disabled (#711, @gpetiot)
• Fix missing space before closing paren around function (#705, @jberdine)
• Fix documentation of doc-comments-tag-only (#710, @gpetiot)
• Improve: module-item-spacing=preserve (#538, @gpetiot)
• Add a space in "Jane Street" (#703, @kevinji)
• Fix js_source.ml (#702, @gpetiot)
• Fix space-around-collection-expressions for record/variant definitions (#670, @Julow)
• Fix extra space ifthenelse (#700, @gpetiot)
• Improve split attribute in let binding for expect test with uncaught exn (#681, @gpetiot)
• Fix empty newline before equal (#701, @gpetiot)
• Fix double cmts (#678, @gpetiot)
• Fix value binding ocp indent compat (#694, @gpetiot)
• Fix ast changed when record ident constrained (#697, @gpetiot)
• Fix incorrect ocaml code (#698, @gpetiot)
• Fix fmt for CI (#693, @gpetiot)
• Fix record break (#689, @gpetiot)
• Fix break before parens no wrap fun args (#690, @gpetiot)
• Improve: disable conf in files and attributes (#684, @gpetiot)
• Fix space around tuples (#679, @gpetiot)
• Improve: break before in for let-module construct, because of ocp-indent (#685, @gpetiot)
• Improve debugging output (#677, @hhugo)
• Improve: group open/close of modules and fix indentation (#665, @gpetiot)
• Fix constrained match in record (#676, @gpetiot)
• Fix: formatting of end line comments (#662, @gpetiot)
• Fix cmt in fun when no break infix (#668, @gpetiot)
• Add the wrap-fun-decl option (#645, @Julow)
• Improve: break the list of 'with type' module constraints (#639, @gpetiot)
• Reduce the use of Poly comparisons (#661, @hhugo)
• Improve: check flag to check whether the input files already are formatted (#657, @gpetiot)
• Fix cmt placement infix op (#651, @gpetiot)
• Restore compat with base.v0.11 (@hhugo)
• Fix: disallow '-' with other inputs (#658, @hhugo)
• Fix build on OCaml 4.06.1 (#646, @Julow)
• Fix comments on record fields (#650, @Julow)
• Fix cmts in list (#654, @gpetiot)
• Improve: If-then-else = fit-or-vertical mode (#603, @gpetiot)
• Link to man page from readme (#648, @yawaramin)
• Fix indent match branches with cmts (#644, @gpetiot)
• Build: update to base v0.12 (#642, @jberdine)
• Fit tag-only doc comments (#637, @Julow)
• Fix try%lwt indent (#638, @gpetiot)
• Fix type manifest formatting (#616, @gpetiot)
• Fix: don't include ocamlformat_diff in ocamlformat (#636, @Khady)
• fix emacs setup (#631, @Khady)
• tools/update_tests.sh --all (#632, Julow)
• Fix: don't break line before wrapping comment (#634, @gpetiot)
• Fix ignored ocamlformat attribute (#615, @gpetiot)
• Include jsoo in the tests (#618, @hhugo)
• Fix missing break before comment (#613, @gpetiot)
• Do not rely on the file-system to format sources (#611, @hhugo)
• Ignore file in .ocamlformat-ignore (#606, @hhugo)
• Improve reason support (#608, @hhugo)
• Fix: fix fmt_ast wrt strings and chars when sources are not available (#607, @hhugo)
• Fix ocamlformat_reason (#604, @hhugo)
• Fix missing break for local open record patterns (#602, @gpetiot)
• Fix regression for variants with docstrings (#601, @gpetiot)
• Fix extra break in module pack type (#600, @Julow)
• Add the doc-comments-padding option (#575, @Julow)
• Improve: externalize Sugar functions from Fmt_ast.ml (#593, @gpetiot)
• Fix typedecl attribute (#595, @gpetiot)
• Improve: less linebreaks for break-cases=fit (#536, @gpetiot)
• fix #590 (#594, @hhugo)
• Make gen_version.sh use bash. (#592, @hhugo)
• Implement box debugging (#574, @Julow)
• Break closing bracket in polymorphic variants (#583, @Julow)
• Break comment record (#580, @Julow)
• missing headers (@hhugo)
• Improve: mishandling of field_space in record exps and patterns (#587, @jberdine)
• Add empty mli for executable (#591, @hhugo)
• tests: test ocamlformat when disabled (@hhugo)
• dont reformat if disabled (@hhugo)
• remove global ref in Transation_unit (@hhugo)
• Fix Emacs (>26.1) temporary buffer not killed (#567, @ludwigpacifici)
• Improve: opam file for ocamlformat_diff to remove the bos dependency (#579, @gpetiot)
• Fix: Require Octavius version 1.2.0 (#576, @Julow)
• Improve: record fields with type constraints (#565, @jberdine)
• Fix: comments attachment (#548, @gpetiot)
• Improve: parens around constrained any-pattern (#431, @gpetiot)
• Revise formatting of compact single case matches (#552, @jberdine)
• Fix typo in help text (#553) (Wilfred Hughes)
• Improve: calculate length of comment strings using UTF8 (#550, @jberdine)
• Admin: update travis versions of ocaml and opam (#551, @jberdine)
• Fix: missing break before ; _ (#549, @jberdine)
• Improve: module item spacing in sparse mode (#546, @jberdine)
• Improve: some simplifications (#542, @gpetiot)
• Improve: remove unnecessary parens when open module (#537, @gpetiot)
• Improve: not breaking after bind/map operators (#463, @gpetiot)
• Fix suboptimal docstring formatting (#540, @gpetiot)
• amend janestreet profile (#524, @mbarbin)
• Improve: option break-separators (#461, @gpetiot)
• Fix formatting of types with ocp-indent-compat=true (#525, @gpetiot)
• Preserve shebang (#533, @gpetiot)
• Fix: remove indented empty lines between comments (#531, @gpetiot)
• Improve: remove indented empty lines separating recursive modules (#528, @gpetiot)
• add update_tests.sh (#529, @gpetiot)
• Improve: space around collection expressions (#527, @gpetiot)
• Improve: remove more spaces inside parenthesized multiline constructs (#526, @gpetiot)
• Disable docstring parsing for external tests (#518, @gpetiot)
• Fix odoc normalize (#520, @gpetiot)
• Better docstring error msgs (#519, @gpetiot)
• Fix odoc seps (#511, @gpetiot)
• Improve: option 'single-case' (#426, @gpetiot)
• Add a parens-tuple-patterns configuration option (#498, @NathanReb)
• Fix: comments should not be parsed for diff (#509, @gpetiot)
• Fix: odoc refs (#510, @gpetiot)
• Fix formatting of or-patterns in try expressions (#503, @NathanReb)
• Test: improve test_branch.sh to allow different config for branch (#496, @jberdine)
• Improve: option 'parens-ite' (#430, @gpetiot)
• fix break-struct for toplevel items (not in a struct) (#497, @gpetiot)
• Fix: breaking of variant types (#486, @gpetiot)
• Improve: autocompletion of git branch names for test_branch.sh (#485, @gpetiot)
• Fix: Sanitize docstring check (#481, @gpetiot)
• Improve the formatting of lists in doc comments (#480, @jeremiedimino)
• Add PR test script and update contributing guidelines with expected usage (#479, @jberdine)
• Fix break struct natural (#443, @gpetiot)
• Fix: disable-outside-detected-project: disable ocamlformat when no .ocamlformat file is found (#475, @gpetiot)
• Improve: error message when docstrings move (#446, @gpetiot)
• Improve: print-config prints all options (#465, @gpetiot)
• Ocamldoc docstrings (#460, @gpetiot)
• Doc: disable-outside-detected-project (#468, @gpetiot)
• Improve: shorter output of regtests (#469, @gpetiot)
• Admin: add code of conduct and copyright headers to build and package system (@jberdine)
• Improve: add license header for tools/ocamlformat-diff/ocamlformat_diff.ml (#466, @gpetiot)
• Build: a few simplifications enabled by dune 1.1.1 (#457, @jberdine)
• Improve: record fields with attributes and docs in type definitions (#458, @jberdine)
• Fix exception comments (#459, @gpetiot)
• OCamlFormat diff tool (#450, @gpetiot)

• Fix auto-generated index.mld. Use correct headings for the listing. (#1925, @rgrinberg, @aantron)

• Correctly write dune-package when version is empty string (#1919, fix #1918, @rgrinberg)

Changes

• All parsing errors are now recoverable warnings (#238).
• Page titles are now level-0 headings ({0 ...}), and top-level sections within a page are level-1 headings ({1 ...}) (#217, Rizo Isrof).
• Don't render definitions of externals (#275, Nik Graf).
• Disable programming ligatures (#248).
• Rename --root-uri option to --xref-base-uri (#223, Rizo Isrof).
• Deprecate redundant reference kind annotations (#246).

Additions

• Preliminary compatibility with the current 4.08 beta releases (#309, Jon Ludlam).
• Paragraph headings ({4 ...}) and subparagraph headings ({5 ...}) (#217, Rizo Isrof).
• odoc support-files-targets command (#232).
• Recommend bsdoc for using odoc with BuckleScript (#269, Leandro Ostera).

Bugs fixed

• Improve breadcrumbs on .mld pages (#293, Daniel Buenzli).
• Display tables of contents in nested module and class pages (#261, Rizo Isrof).
• Uncaught exception when parsing references to operators with - in them, such as @-> (#178).
• Incorrect parsing of references to operators with . in them, such as *. (#237).
• Assertion failure when processing optional arguments in an .ml file with a type annotation, when that type annotation uses an alias of 'a option (#101).
• Assertion failure when two modules with the same name are found by odoc (#148, Jon Ludlam).
• Verbatim blocks ({v ... v}) can now only be terminated if the v} is immediately preceded by whitespace (#71, reported Daniel Buenzli).
• Wrong column numbers for errors reported in comments (#227, #253).
• Restore parsing of ocamldoc-style reference kind annotations (#244).
• Ordinary type keyword instead of and rendered in HTML for mutually-recursive types (#105, reported @Fourchaux).
• nonrec keyword not rendered (#249).
• and not rendered for mutually-recursive modules, classes, and class types (#251).
• Outer comment attached to a module rendered when the module is included (#87, Jon Ludlam).
• Polymorphic variant constructor documentation not rendered (#176, reported @steinuil).
• Variant constructor and record field documentation styled differently (#260, Jon Ludlam).
• Sloppy keyword markup in HTML output (#319).
• Rendering of multiple constraint clauses (#321).
• Incorrect order of functor arguments (#261, Rizo Isrof).
• odoc html option -o now creates the output directory if it does not exist #171, #264 Rizo Isrof).
• odoc html-targets output now includes path prefix given through -o option (#173, Rizo Isrof).
• Allow -I and -o options to refer to non-existent directories (#32, #170, Daniel Buenzli).
• Make odoc compile-targets match odoc compile (#273, Daniel Buenzli).
• odoc compile-deps does not work on .cmt files (#162, Daniel Buenzli).
• odoc html-deps now scans for .odoc files recursively (#307, Daniel Buenzli).
• odoc html-targets ignores stop comments (#276, Daniel Buenzli).
• odoc html-targets and odoc html-deps segfault on .mld pages (#277, #282, Daneil Buenzli).
• --theme-uri option not propagated to some subpages (#318, Thomas Refis).
• Binary files not opened in binary mode (#281, Ulrik Strid).

Build and development

• Always print backtraces for unhandled exceptions (3d10feb).
• CI on macOS (#216, Leandro Ostera).
• Test runner improvements (#266, Rizo Isrof).
• Fix esy builds in Travis (#301, Jon Ludlam).
• Don't require make in the esy build (#308, Leandro Ostera).
• Get rid of some large GADTs (#292, Jon Ludlam).
• Remove dependency on bos (#305, Daniel Buenzli).
• Remove dependency on rresult (#306, Daniel Buenzli).
• Remove dependency on bisect_ppx, previously present in development checkouts (#316).

• Clean up watch mode polling loop: improves signal handling and error handling during polling (#1912, fix #1907, fix #1671, @aalekseyev)

• Change status messages during polling to be one-line, so that the messages are correctly erased by ^K. (#1912, @aalekseyev)

• Add support for .cxx extension for C++ stubs (#1831, @rgrinberg)

• Add DUNE_WORKSPACE variable. This variable is equivalent to setting --workspace in the command line. (#1711, fix #1503, @rgrinberg)

• Add c_flags and cxx_flags to env profile settings (#1700 and #1800, @gretay-js)

• Format dune printenv output (#1867, fix #1862, @emillon)

• Add the (promote-into <dir>) and `(promote-until-clean-into

  )` modes for `(rule ...)` stanzas, so that files can be promoted in another directory than the current one. For instance, this is used in merlin to promote menhir generated files in a directory that depends on the version of the compiler (#1890, @jeremiedimino)

• Improve error message when dune subst fails (#1898, fix #1897, @rgrinberg)

• Add more GC counters to catapult traces (fix908, @rgrinberg)

• Add a preprocessor shim for the let+ syntax of OCaml 4.08 (#1899, implements #1891, @jeremiedimino)

• Fix generation of .merlin files on Windows. \ characters needed to be escaped (#1869, @mlasson)

• Fix 0 error code when $ dune format-dune-file fails. (#1915, fix #1914, @rgrinberg)

• Configurator: deprecated query_expr and introduced query_expr_err which is the same but with a better error in case it fails. (#1886, @ejgallego)

• Make sure (menhir (mode promote) ...) stanzas are ignored when using --ignore-promoted-rules or -p (#1917, @jeremiedimino)

• Updated readme file with the new features: dune rules, named environment and ocaml versions, Some grammar correction too (@gpetiot, #101, aantron, #102)
• Better lexer error messages (@avsm, #103)
• Added cram syntax parsing (@trefis, #106)
• Renamed mdx to ocaml-mdx to avoid conflicts/for more precision (@clecat, #110, #115)
• Fix blank spaces causing parsing errors (@gpetiot, #97)
• Fix empty lines causing a String.sub (@clecat, #107)

• Fix interpretation of META files containing archives with / in the filename. For instance, this was causing llvm to be unusable with dune (#1889, fix #1885, @diml)

• Make errors about menhir stanzas be located (#1881, fix #1876, @diml)

• Add ${corrected-suffix}, ${library-name} and a few other variables to the list of variables to upgrade. This fixes the support for various framework producing corrections (#1840, #1853, @diml)

• Fix $ dune subst failing because the build directory wasn't set. (#1854, fix #1846, @rgrinberg)

• Configurator: Add warning to Pkg_config.query when a full package expression is used. Add Pkg_config.query_expr for cases when the full power of pkg-config's querying is needed (#1842, fix #1833, @rgrinberg)

• Fix unavailable, optional implementations eagerly breaking the build (#1857, fix #1856, @rgrinberg)

• Fix the watch mode (#1837, #1839, fix #1836, @diml)

• Configurator: Fix misquoting when running pkg-config (#1835, fix #1833, @Chris00)

• Second step of the deprecation of jbuilder: the jbuilder binary now emits a warning on every startup and both jbuilder and dune emit warnings when encountering jbuild files (#1752, @jeremiedimino)

• Change the layout of build artifacts inside _build. The new layout enables optimizations that depend on the presence of .cmx files of private modules (#1676, @bobot)

• Fix merlin handling of private module visibility (#1653 @bobot)

• unstable-fmt: use boxes to wrap some lists (#1608, fix #1153, @emillon, thanks to @rgrinberg)

• skip directories when looking up programs in the PATH (#1628, fixes #1616, @jeremiedimino)

• Use lsof on macOS to implement --stats (#1636, fixes #1634, @xclerc)

• Generate dune-package files for every package. These files are installed and read instead of META files whenever they are available (#1329, @rgrinberg)

• Fix preprocessing for libraries with (include_subdirs ..) (#1624, fix #1626, @nojb, @rgrinberg)

• Do not generate targets for archive that don't match the modes field. (#1632, fix #1617, @rgrinberg)

• When executing actions, open files lazily and close them as soon as possible in order to reduce the maximum number of file descriptors opened by Dune (#1635, #1643, fixes #1633, @jonludlam, @rgrinberg, @jeremiedimino)

• Reimplement the core of Dune using a new generic memoization system (#1489, @rudihorn, @jeremiedimino)

• Replace the broken cycle detection algorithm by a state of the art one from this paper (#1489, @rudihorn)

• Get the correct environment node for multi project workspaces (#1648, @rgrinberg)

• Add dune compute to call internal memoized functions (#1528, @rudihorn, @jeremiedimino)

• Add --trace-file option to trace dune internals (#1639, fix #1180, @emillon)

• Add --no-print-directory (borrowed from GNU make) to suppress Entering directory messages. (#1668, @dra27)

• Remove --stats and track fd usage in --trace-file (#1667, @emillon)

• Add virtual libraries feature and enable it by default (#1430 fixes #921, @rgrinberg)

• Fix handling of Control+C in watch mode (#1678, fixes #1671, @jeremiedimino)

• Look for jsoo runtime in the same dir as the js_of_ocaml binary when the ocamlfind package is not available (#1467, @nojb)

• Make the seq package available for OCaml >= 4.07 (#1714, @rgrinberg)

• Add locations to error messages where a rule fails to generate targets and rules that require files outside the build/source directory. (#1708, fixes #848, @rgrinberg)

• Let Configurator handle sizeof (in addition to negative numbers). (#1726, fixes #1723, @Chris00)

• Fix an issue causing menhir generated parsers to fail to build in some cases. The fix is to systematically use -short-paths when calling ocamlc -i (#1743, fix #1504, @jeremiedimino)

• Never raise when printing located errors. The code that would print the location excerpts was prone to raising. (#1744, fix #1736, @rgrinberg)

• Add a dune upgrade command for upgrading jbuilder projects to Dune (#1749, @jeremiedimino)

• When automatically creating a dune-project file, insert the detected name in it (#1749, @jeremiedimino)

• Add (implicit_transitive_deps <bool>) mode to dune projects. When this mode is turned off, transitive dependencies are not accessible. Only listed dependencies are directly accessible. (#1734, #430, @rgrinberg, @hnrgrgr)

• Add toplevel stanza. This stanza is used to define toplevels with libraries already preloaded. (#1713, @rgrinberg)

• Generate .merlin files that account for normal preprocessors defined using a subset of the action language. (#1768, @rgrinberg)

• Emit (orig_src_dir <path>) metadata in dune-package for dune packages built with --store-orig-source-dir command line flag (also controlled by DUNE_STORE_ORIG_SOURCE_DIR env variable). This is later used to generate .merlin with S-directives pointed to original source locations and thus allowing merlin to see those. (#1750, @andreypopp)

• Improve the behavior of dune promote when the files to be promoted have been deleted. (#1775, fixes #1772, @jeremiedimino)

• unstable-fmt: preserve comments (#1766, @emillon)

• Pass flags correctly when using staged_pps (#1779, fixes #1774, @jeremiedimino)

• Fix an issue with the use of (mode promote) in the menhir stanza. It was previously causing intermediate mock files to be promoted (#1783, fixes #1781, @jeremiedimino)

• unstable-fmt: ignore files using OCaml syntax (#1784, @emillon)

• Configurator: Add which function to replace the which command line utility in a cross platform way. (#1773, fixes #1705, @Chris00)

• Make configurator append paths to $PKG_CONFIG_PATH on macOS. Previously it was prepending paths and thus $PKG_CONFIG_PATH set by users could have been overridden by homebrew installed libraries (#1785, @andreypopp)

• Disallow c/cxx sources that share an object file in the same stubs archive. This means that foo.c and foo.cpp can no longer exist in the same library. (#1788, @rgrinberg)

• Forbid use of %{targets} (or ${@} in jbuild files) inside preprocessing actions (#1812, fixes #1811, @jeremiedimino)

• Add DUNE_PROFILE environment variable to easily set the profile. (#1806, @rgrinberg)

• Deprecate the undocumented (no_keep_locs) field. It was only necessary until virtual libraries were supported (#1822, fix #1816, @jeremiedimino)

• Rename unstable-fmt to format-dune-file and remove its --inplace option. (#1821, @emillon).

• Autoformatting: (using fmt 1.1) will also format dune files (#1821, @emillon).

• Autoformatting: record dependencies on .ocamlformat-ignore files (#1824, fixes #1793, @emillon)

• Add cool screenshot to README (#259 @rizo) and update links (#257 @bobot)
• Improve robustness by using more tail-recursive functions (#251 @gpetiot)
• Remove deprecation warnings in newer compilers (#246 @ncihnegn)
• Minimum OCaml version supported is now 4.03.0 (#254 @XVilka)
• Publish API documentation online and add doc: entry to opam file (#270 @avsm)
• Port build to dune from jbuilder (#268 @avsm)
• Upgrade local opam metadata to opam 2.0 format (#268 @avsm)