v2.0.0-M5

Milestone v2.0.0-M5 release.

This release is compatible with v2.0.0-M4`. Core binary compatiblity with 1.x, except Scala 2.11 and static forwarders for Java interop. See #566, #584 for a deeper discussion.

Changes

Features:

• #566: Restore binary compatibility in core on Scala >= 2.12, except for static forwarder.
• #568: Make default scheduler remove cancelled tasks
• #574: Add Resource.liftK
• #591: Add Async.fromFuture

Chores:

• #564: Use λ syntax from kind-projector
• #571: Update sbt-coursier to 1.0.3
• #572: Update sbt-scoverage to 1.6.0
• #573: Update sbt-sonatype to 2.5
• #581: Update sbt-scalajs-crossproject to 0.6.1
• #575: Update sbt-tpolecat to 0.1.7
• #590: Update sbt-microsites to 0.9.2 (builds on #589)
• #584: Update sbt-mima-plugin to 0.5.0

Documentation:

• #567: Align scaladoc with examples from the official docs for IO.shift
• #578: Get rid of N.B. in documentation
• #586: Fix typo in bracketCase doc

Special Thanks

This release was made possible by:

• @amohrland
• @asakaev
• @CucumisSativus
• @Daenyth
• @djspiewak
• @julien-truffaut
• @kubukoz
• @rossabaker
• @theiterators
• @TomTriple

Thanks to all those involved!

v1.4.0

This release is binary compatible with the 1.x series. It exclusively contains backports from master.

Changes

Enhancements:

• #568 (backport): Make default scheduler remove cancelled tasks.
• #554 (backport): Add Invariant instance for Ref
• #556 (backport): Add Blocker. ContextShift#evalOn omitted for binary compatibility.
• #498 (backport): Add parTraverseN and parSequenceN. Syntax omitted for binary compatibility.
• #560 (backport): Renamed Blocker#evalOn(Blocker) to blockOn and changed Blocker to a value class
• #574 (backport): Add Resource.liftK
• #591 (backport): Add Async.fromFuture

Documentation

• #567 (backport): Align scaladoc with examples from the official docs for IO.shift
• #568 (backport): Fix typo in bracketCase doc

Special Thanks

This release was made possible by:

• @avakhrenev
• @Daenyth
• @Jacoby6000
• @julien-truffaut
• @kubukoz
• @mpilquist
• @rossabaker
• @sideeffffect
• @TomTriple

Thanks to all those involved!

v2.0.0-M4

Milestone v2.0.0-M4 release.

This release breaks binary compatibility with v2.0.0-M3 and the 1.x series due to #546. It is source compatible except where IO.fromFuture is called without a ContextShift[IO] in scope.

Changes

Breaking:

• #546: Enforce shifting within IO.fromFuture, which now requires an implicit ContextShift[IO]

Features:

• #553: Shift on errors in IO.fromFuture
• #547: Replace global with a fixed thread pool as the default IOApp Timer and ContextShift (JVM only)
• #554: Add Invariant instance for Ref
• #556, #560 : Added Blocker, a new type for blocking execution contexts
• #498: Add parTraverseN and parSequenceN

Chores:

• #561: use advertised syntax from the docs for FunctionK
• #562: Scala 2.13.0 support, with related dependencies

Documentation:

• #551: Copy editing of docs
• #557: Fix typo in basics.md
• #558: Remove logical/native threads distinction from Concurrency Basics doc

Special Thanks

This release was made possible by:

• @asakaev
• @Avasil
• @djspiewak
• @kubukoz
• @sideeffffect
• @ssanj
• @TomTriple

Thanks to all those involved!

v2.0.0-M3

Milestone 2.0.0-M3 release.

This release has no changes from 2.0.0-M2, aside from the dependency updates necessary to cross-build for Scala 2.13.0-RC3. Special thanks to @xuwei-k!

v2.0.0-M2

Milestone v2.0.0-M2 release.

This release is source compatible with the 1.x series, except cats-effect-laws.

Changes

Features:

• #541: Support Scala 2.13.0-RC2, drop 2.13.0-RC1
• #519: onCancel + continual

Chores:

• #524: Update Discipline version
• #527: Update scalatest to 3.1.0-SNAPSHOT
• #538: Update sbt to 1.2.8
• #540: Use sbt-tpolecat, fix ensuing warnings

Tests:

• #542: Increased all the sleeps in Timer tests by an order of magnitude

Documentation changes:

• #525: Code of Conduct link tweaks
• #531: Fix broken sentence in SyncIO doc
• #536: Fix typo in mvar doc
• #534: Update Resource docs after the change from #496

Special Thanks

This release was made possible by:

• @asakaev
• @esarbe
• @jhnsmth
• @kubukoz
• @rossabaker
• @scala-steward
• @SystemFw
• @travisbrown

Thanks to all those involved!

v1.3.1

General 1.3.1 release.

This release is binary compatible with the 1.x series.

Changes

Fixes:

• #543: Backport Scala.js IOApp signal handler fix from #540
• #533: Fix IORunLoop#step bug (backported from master)
• #537: Concurrent.memoize is well behaved under cancellation (backported from master)

Documentation changes:

• #522: Fix version references on the README

Special Thanks

This release was made possible by:

• @nomisRev
• @rossabaker
• @SystemFw

Thanks to all those involved!

v2.0.0-M1

Milestone v2.0.0-M1 release.

This release is binary compatible with the 1.x series, except cats-effect-laws.

Changes

Features:

• #508: Scala-2.13.0-RC1 support with cats-2.0.0-M1 and scalacheck-1.14

Fixes:

• #513: Remove unused Eq[IO[Either[F[A], A]]] from EffectTests

Chores:

• #514: Remove unused ec in tests

Documentation changes:

• #520: Add Cats STM to list of related projects
• #522: Fix version references on the README

Special Thanks

This release was made possible by:

• @djspiewak
• @nigredo-tori
• @rossabaker
• @TimWSpence

Thanks to all those involved!

v1.3.0

General 1.3.0 release.

This release is binary compatible with the 1.x series.

Changes

Features:

• #482: Suspend vars in SyncLaws
• #494: Add IO.fromTry
• #491: Add LiftIO instance for Resource
• #492: Add LiftIO.liftK, Effect.toIOK
• #490: Add Resource.evalTap
• #472: Make IO.Par's applicative commutative
• #511: Add Resource.fromDestroyable

Fixes:

• #496: Make Resource.liftF interruptible
• #499: Fix infinitely waiting cancellation of a bracket which failed to acquire

Chores:

• #484: Update cats-core, cats-laws to 1.6.0
• #501: Update sbt-travisci to 1.2.0
• #505: Update sbt-scalajs, scalajs-compiler to 0.6.27
• #495: Update sbt-header to 5.2.0
• #471: Fix shell test to makeMicrosite
• #510: Update sbt-jmh to 0.3.6
• #518: Switch to xenial and openjdk8

Documentation changes:

• #478: Fix typo in Resource scaladoc
• #506: Remove redundant brace
• #504: Fix fib in cats-effect/datatypes documentation
• #497: Remove unnecessary Parallel instance in semaphore docs
• #489: Use ContextShift.apply in the tutorial
• #516: Clear up Resource docs

Special Thanks

This release was made possible by:

• @aaabramov
• @alexandru
• @ChristopherDavenport
• @Daron666
• @djspiewak
• @jooohn
• @kartavtcev
• @ksonj
• @kubukoz
• @lrodero
• @mpurins
• @nigredo-tori
• @RafalSumislawski
• @rossabaker
• @scala-steward
• @SystemFw
• @tixxit

Thanks to all those involved!

v1.2.0

General 1.2.0 release.

This release is binary compatible with 1.1.0 and the 1.x series.

Changes

Features:

• #395: Adds Deferred.tryGet, via a new TryableDeferred interface
• #437: Adds a map method directly on Resource
• #439: Adds an evalMap method to Resource
• #464: Adds mapK onto Resource

Fixes:

• #442: Fixes #441, the law bracketReleaseIsCalledOnCompletedError assumes generators never fail
• #443: Uses parSequence rather than sequence in RefTests
• #458: Avoids Throwable#addSuppressed & CompositeException
• #462: Lazily create instance of TimeoutException in IO.timeout
• #473: Adds "repeated asyncF evaluation not memoized" law

Chores:

• #457: Ignores any MiMa problems from the internals package
• #474: Updates copyright
• #476: Updates Simulacrum to 0.15.0
• Updates Scala to 2.12.8 link

Documentation changes:

• #372: Adds one ContextShift example out of three provided options
• #394: Adds documentation on throwing in release function (issue #357)
• #434: Adds an awesome data types cheat sheet
• #447: Removes misleading information about Context shift from IO parallel tutorial
• #454: Fixes error in the Ref docs
• #456: Updates the type class diagram
• #463: Various spelling corrections
• #470: Does some doc fixing
• #477: Fixes doc, fusionMaxStackDepth system property referred to as env var

Getting Involved

You can always help with:-

1. Feedback by joining us on Gitter
2. Re-tweet the release announcement
3. Give us a star on GitHub 🙂

Special Thanks

This release was made possible by: @alexandru, @andimiller, @Avasil, @ceedubs, @CucumisSativus, @dwijnand, @johnynek, @kubukoz, @ksonj, @ml10, @Odomontois, @prayagupd, @t3hnar, @Slakah, @SystemFw, @XoJIoD89, @Zelenya

Thanks to all those involved!

v1.1.0

General 1.1.0 release.

This follows the 1.1.0-M1 milestone.

Changes (since M1)

Added features:

• #334: Add ContextShift#evalOnK
• #365: Add IorT instances
• #392: Introduce mapK operations to concurrent primitives
• #393: Add dual effect concurrent data constructors
• #419: Resource.allocated

Fixes:

• #374, #427: Properly propogate Writer and State effects in bracketCase
• #403: Fix resource leak in Semaphore#withPermit and acquireN
• #421: Fix Resource attempt on suspend
• #424, #402: Ensure that MVar.take, MVar.put, Semaphore.release and Deferred.complete do not block, also improving fairness for the Concurrent versions

Chores:

• #362: Tutorial for Cats-Effect
• #366: Add some test cases for LinkedMap
• #397: Add missing test methods for Semaphore
• #399: Fix sentence flow in IOApp docs
• #406: Update reference to evalOn's fa parameter
• #408: Update sbt-travisci to 1.1.3
• #409: Update sbt-pgp to 1.1.2
• #410: Update sbt-mima-plugin to 0.3.0
• #411: Update sbt-git to 1.0.0
• #414: Update sbt-jmh to 0.3.4
• #417: Typeclasses cheat sheet
• #426: Update kind-projector to 0.9.9
• #428: Update sbt-scalajs, scalajs-compiler, scalajs-library... to 0.6.26
• #429, #425: Upgrade to Scala 2.12.7 and 2.13.0-M5
• #432: Add proper Scala.js source maps, pointing to GitHub repo
• #433: Update SBT to 1.2.7
• #435: Update Cats to version 1.5.0

Changes in M1

Added features:

• #387: Add ContextShift.apply to summon implicit ContextShift
• #389: Add Timer.apply to summon implicit Timer
• #400: Add Clock.apply to summon implicit Clock

Docs:

• #356: Change to Scala's Code of Conduct
• #358: Concurrency basics pictures
• #385: Update readme to reference partial unification
• #381: Add concurrency basics to menu
• #396: Add Finch as adopter

Bug fixes and chores:

• #361: Add more semaphore tests
• #353: Reset MiMa baseline
• #377: Remove unused IOConnection in IOBracket release frames
• #379 : Upgrade to cats-1.4.0 (supersedes #352)
• #376: Force fiber#cancel to await completion of bracket, fix idempotence of release
• #355: Increase test coverage of Ref
• #398: Update oraclejdk10 to openjdk11 in test matrix

Getting Involved

You can always help with:-

1. Feedback by joining us on Gitter
2. Re-tweet the release announcement
3. Give us a star on GitHub 🙂

Special Thanks

This release was made possible by: @alexandru, @ahjohannessen, @Avasil, @catostrophe, @charles-rumley, @ChristopherDavenport, @CucumisSativus, @djneades, @fthomas, @ghisvail, @joan38, @kubukoz, @lrodero, @LukaJCB, @mpilquist, @mszczygiel, @Odomontois, @RaasAhsan, @rossabaker, @scala-steward, @SystemFw, @vkostyukov, @Zelenya and several other reviewers and commenters.

Thanks to all those involved!