opam 2.1.0~beta4 released
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- Reduced startup times, in particular for opam exec[#4341 @altgr]
- Fixed the sandboxing check on fresh inits [#4342 @altgr]
- Fixed cases where --with-versionwas not respected byopam pin[#4346 @altgr]
- Upgraded the bootstrap OCaml compiler from 4.09.1 to 4.11.1 [#4242 @avsm @dra27 @MisterDA @rjbou]