v3.5.2

This is the forty-seventh release in the Cats Effect 3.x lineage. It is fully binary compatible with every 3.x release and fully source-compatible with every 3.5.x release.

⚠️ Important note

The 3.5.x series contains some changes that may be semantically breaking with respect to earlier 3.x releases. If you're using fs2, http4s, or other libraries from the ecosystem, make sure you've upgraded to versions of these libraries that are compatible with this release (for fs2, that's 3.7.0+, for http4s it's 0.23.19+)!

Additionally, if you're using methods like fromFuture, make sure you're aware of the major changes to async, described in these release notes.

What's Changed

Features

• Optimize liveTraces() on JS by @armanbilge in #3724
• Elide thunk allocation when using sleepInternal by @armanbilge in #3775
• Remove Thunk.asFunction0 utility by @armanbilge in #3788
• Print warning when we detect a non-main-thread main by @Daenyth in #3774
• Optimize Dispatcher#{unsafeRunAsync,unsafeRunAndForget} by @kamilkloch in #3822

Bug Fixes

• Fix Hotswap#get being blocked by Hotswap#swap by @forkedcancel in #3800
• Acquire exclusive lock before finalizing Hotswap by @armanbilge in #3841

Behind the Scenes

• Fix major branch PR in release script by @armanbilge in #3713
• Added script for automatically posting release to discord by @djspiewak in #3711
• Add release notes config by @armanbilge in #3710
• Remove unused code by @durban in #3729
• Allow that the renamed blocker thread is terminated by @aeons in #3728
• Dispatcher: test cleanup by @samspills in #3749
• update CI to use graalvm@17 by @samspills in #3773
• Cirrus CI cutbacks ... by @armanbilge in #3796
• Drop macOS jobs from Cirrus by @armanbilge in #3831
• Enough is Enough by @djspiewak in #3833
• Run Cirrus only for labeled PRs or tags by @armanbilge in #3842
• Updated versions script to look for ** pattern by @djspiewak in #3843
• Try quoting labels in release notes config by @armanbilge in #3847
• Add catch-all category for unlabeled PRs by @armanbilge in #3854

Documentation

• Update versions for 3.5.1 by @armanbilge in #3718
• Fix typo by @durban in #3738
• update Deferred#complete type by @ag91 in #3740
• fix typo in tutorial by @vgrigoriu in #3760
• Explain "uhandled error" in reportFailure scaladoc by @kamilkloch in #3769
• Improve MapRef docs by @BalmungSan in #3829

New Contributors

• @ag91 made their first contribution in #3740
• @vgrigoriu made their first contribution in #3760
• @forkedcancel made their first contribution in #3800

Full Changelog: v3.5.1...v3.5.2