Cats Files

Cats v2.13.0 is a binary-compatible release in the 2.x series. It is published for Scala 2.12, 2.13, and 3.3 with Scala.js 1.17 and Scala Native 0.5.

What's Changed

The release comes with new APIs, as well as bugfixes and optimizations. While it is binary- and source- compatible, it is recommended for downstream projects to start replacing calls to sequence_ and traverse_ functions (along with their unordered* and par* counterparts) with sequenceVoid, traverseVoid, etc., correspondingly.

Features

• Add FunctionN.liftN, parLiftN by @kubukoz in https://github.com/typelevel/cats/pull/4340
• Add distinctBy to NonEmptyCollection and all impls by @cybersaurus in https://github.com/typelevel/cats/pull/4608
• Add Hash and Order Instances for NonEmptyVector by @isomarcte in https://github.com/typelevel/cats/pull/4612
• Semigroup object additions by @igstan in https://github.com/typelevel/cats/pull/4625
• Issue [#4631]: Make Later covariant by @yanns in https://github.com/typelevel/cats/pull/4632
• Add EitherOps#leftMapOrKeep and EitherOps#leftFlatMapOrKeep by @danicheg in https://github.com/typelevel/cats/pull/4638
• Add Defer.recursiveFn to aid in recursion by @johnynek in https://github.com/typelevel/cats/pull/4656
• Add unorderedFoldMapA method by @m50d in https://github.com/typelevel/cats/pull/4662
• alleycats - Extract[F[_]] the only way to get the syntax is the deprecated one by @aluscent in https://github.com/typelevel/cats/pull/4670
• Use alignWith in alignMergeWith by @joroKr21 in https://github.com/typelevel/cats/pull/4676
• Aliases traverseVoid/sequenceVoid and their counterparts by @satorg in https://github.com/typelevel/cats/pull/4682
• Add take/takeRight/drop/dropRight to Chain by @johnynek in https://github.com/typelevel/cats/pull/4694

Bugfixes

• Fix alleycats Set Functor ambiguous implicits by @LaurenceWarne in https://github.com/typelevel/cats/pull/4678

Optimizations

• Override Foldable#toIterable for Chain by @durban in https://github.com/typelevel/cats/pull/4693
• Optimize Chain.traverseVoid by @johnynek in https://github.com/typelevel/cats/pull/4695

Documentation

• add Blue Insight Digital to ADOPTERS.md by @ahoy196 in https://github.com/typelevel/cats/pull/4528
• correct & add documentation links by @performantdata in https://github.com/typelevel/cats/pull/4613
• Fix typo in Newtype scaladoc by @i-am-the-slime in https://github.com/typelevel/cats/pull/4619
• Fix broken internal link by @bwignall in https://github.com/typelevel/cats/pull/4622
• Point to sbt 1.x by @bwignall in https://github.com/typelevel/cats/pull/4624
• Fix typos by @bwignall in https://github.com/typelevel/cats/pull/4634
• Replace tut with mdoc on the colophon page by @danicheg in https://github.com/typelevel/cats/pull/4641
• Fix the broken link on the typeclasses page by @danicheg in https://github.com/typelevel/cats/pull/4645
• Fix foldLeft nomenclature signature by @Masynchin in https://github.com/typelevel/cats/pull/4648
• Fix some awkward imports by @satorg in https://github.com/typelevel/cats/pull/4659
• Fix Sponsors section by @valencik in https://github.com/typelevel/cats/pull/4660
• Change IPONWEB to Criteo in ADOPTERS.md by @bio-aeon in https://github.com/typelevel/cats/pull/4679

Behind-the-scenes

• Use helper functions in generated code by @joroKr21 in https://github.com/typelevel/cats/pull/4303
• Fix/suppress warnings in kernel and kernel-laws by @satorg in https://github.com/typelevel/cats/pull/4614
• Adjust the JVM options to heal the Native build on CI by @danicheg in https://github.com/typelevel/cats/pull/4623
• Rename root -> cats in build.sbt by @danicheg in https://github.com/typelevel/cats/pull/4644
• use & instead of with by @xuwei-k in https://github.com/typelevel/cats/pull/4673

Updates

• Update GraalVM from 17 to 21 by @mzuehlke in https://github.com/typelevel/cats/pull/4667
• Update auxlib, clib, javalib, nativelib, ... to 0.5.2 by @typelevel-steward in https://github.com/typelevel/cats/pull/4607
• Update auxlib, clib, javalib, nativelib, ... to 0.5.3 by @typelevel-steward in https://github.com/typelevel/cats/pull/4609
• Update auxlib, clib, javalib, nativelib, ... to 0.5.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4627
• Update auxlib, clib, javalib, nativelib, ... to 0.5.5 by @typelevel-steward in https://github.com/typelevel/cats/pull/4646
• Update auxlib, clib, javalib, nativelib, ... to 0.5.6 by @typelevel-steward in https://github.com/typelevel/cats/pull/4675
• Update munit to 1.0.1 by @typelevel-steward in https://github.com/typelevel/cats/pull/4643
• Update munit to 1.0.2 by @typelevel-steward in https://github.com/typelevel/cats/pull/4653
• Update munit to 1.0.3 by @typelevel-steward in https://github.com/typelevel/cats/pull/4684
• Update munit to 1.0.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4697
• Update sbt to 1.10.1 by @typelevel-steward in https://github.com/typelevel/cats/pull/4633
• Update sbt to 1.10.2 by @typelevel-steward in https://github.com/typelevel/cats/pull/4655
• Update sbt to 1.10.3 by @typelevel-steward in https://github.com/typelevel/cats/pull/4666
• Update sbt to 1.10.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4669
• Update sbt to 1.10.5 by @typelevel-steward in https://github.com/typelevel/cats/pull/4672
• Update sbt, scripted-plugin to 1.10.6 by @typelevel-steward in https://github.com/typelevel/cats/pull/4683
• Update sbt, scripted-plugin to 1.10.7 by @typelevel-steward in https://github.com/typelevel/cats/pull/4691
• Update sbt-buildinfo to 0.13.0 by @typelevel-steward in https://github.com/typelevel/cats/pull/4671
• Update sbt-buildinfo to 0.13.1 by @typelevel-steward in https://github.com/typelevel/cats/pull/4674
• Update sbt-doctest to 0.11.0 by @typelevel-steward in https://github.com/typelevel/cats/pull/4668
• Update sbt-doctest to 0.11.1 by @typelevel-steward in https://github.com/typelevel/cats/pull/4688
• Update sbt-scalajs, scalajs-compiler, ... to 1.17.0 by @typelevel-steward in https://github.com/typelevel/cats/pull/4685
• Update sbt-typelevel, sbt-typelevel-site to 0.7.2 by @typelevel-steward in https://github.com/typelevel/cats/pull/4636
• Update sbt-typelevel, sbt-typelevel-site to 0.7.3 by @typelevel-steward in https://github.com/typelevel/cats/pull/4651
• Update sbt-typelevel, sbt-typelevel-site to 0.7.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4665
• Update sbt-typelevel, sbt-typelevel-site to 0.7.5 by @typelevel-steward in https://github.com/typelevel/cats/pull/4692
• Update sbt-typelevel, sbt-typelevel-site to 0.7.6 by @typelevel-steward in https://github.com/typelevel/cats/pull/4701
• Update scala-library, scala-reflect to 2.12.20 by @typelevel-steward in https://github.com/typelevel/cats/pull/4649
• Update scala-library, scala-reflect to 2.13.15 by @typelevel-steward in https://github.com/typelevel/cats/pull/4657
• Update scala-library, scala-reflect to 2.13.16 by @typelevel-steward in https://github.com/typelevel/cats/pull/4699
• Update scala3-library, ... to 3.3.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4658
• Update scalacheck to 1.18.1 by @typelevel-steward in https://github.com/typelevel/cats/pull/4654
• Update scalafmt-core to 3.8.2 by @typelevel-steward in https://github.com/typelevel/cats/pull/4620
• Update scalafmt-core to 3.8.4 by @typelevel-steward in https://github.com/typelevel/cats/pull/4698
• Update scalafmt-core to 3.8.5 by @typelevel-steward in https://github.com/typelevel/cats/pull/4700

New Contributors

• @cybersaurus made their first contribution in https://github.com/typelevel/cats/pull/4608
• @performantdata made their first contribution in https://github.com/typelevel/cats/pull/4613
• @i-am-the-slime made their first contribution in https://github.com/typelevel/cats/pull/4619
• @yanns made their first contribution in https://github.com/typelevel/cats/pull/4632
• @mzuehlke made their first contribution in https://github.com/typelevel/cats/pull/4667
• @ahoy196 made their first contribution in https://github.com/typelevel/cats/pull/4528
• @LaurenceWarne made their first contribution in https://github.com/typelevel/cats/pull/4678
• @aluscent made their first contribution in https://github.com/typelevel/cats/pull/4670

Full Changelog: https://github.com/typelevel/cats/compare/v2.12.0...v2.13.0