Fix ref-leak when rejecting duplicate workers (@talex5 #124)
Improve handling of a worker's active state (@talex5 #123)
Report better error on duplicate worker registration (@talex5 #122)
Switch pool tests to expect tests (@talex5 #121)
Add timestamps to OBuilder logs (@talex5 #120)
Fix opam constraint on digestif (@kit-ty-kate #118, reviewed by @talex5)
Add support for secrets. Secrets are a way to transmit sensitive key-value pairs to workers, without having them displayed in any log files. (@TheLortex #116, reviewed by @talex5)
Add optional label to build_obuilder (@TheLortex #113, reviewed by @talex5)