Sourced from scala-library's releases.

Scala 2.12.8

This release fixes two regressions that appeared in 2.12.7:

• Don't reject views with result types which are TypeVars (#7295)
• Don't emit static forwarders (which simplify the use of methods in top-level objects from Java) for bridge methods (#7469)

The second fix is not binary compatible: the 2.12.8 compiler omits certain methods that are generated by earlier 2.12 compilers. However, we believe that these methods are never used and existing compiled code will continue to work. See the pull request description for more details.

Further highlights of this release:

• The license was changed to Apache v2.0 (#7314)
• Improved inference of parameter types for eta-expansion (#7340)
• Emit detailed compiler trace under -Yprofile-trace (#7364)
• Make the compiler output deterministic under incremental compilation (#7203)

For more details, check out all closed bugs and merged PRs.

As usual for minor releases, Scala 2.12.8 is binary compatible with the whole Scala 2.12 series.

Contributors

A big thank you to everyone who's helped improve Scala by reporting bugs, improving our documentation,
spreading kindness in discussions around Scala, and submitting and reviewing pull requests! You are all magnificent.

This release was brought to you by 15 contributors, according to git shortlog -sn --no-merges v2.12.7..v2.12.8. Thank you
Jason Zaugg, Adriaan Moors, Harrison Houghton, Miles Sabin, A. P. Marki, Janek Bogucki, Lukas Rytz, Georgi Krastev, Sujeet Kausallya Gholap, Dale Wijnand, psilospore, Mike Skells, Aaron S. Hawley, Eugene Yokota, Diego Alonso.

Thanks to Lightbend for their continued sponsorship of the Scala core team’s efforts. Lightbend offers commercial support for Scala.

Scala 2.12 Notes

The release notes for Scala 2.12.0 have important information applicable to the whole 2.12 series.

Obtaining Scala

Scala releases are available through a variety of channels, including (but not limited to):

• Bump the scalaVersion setting in your sbt-based project
• Download a distribution from scala-lang.org
• Obtain JARs via Maven Central

Scala 2.12.7

Main highlights of this release:

• Add Scaladoc markdown tables (#6043)
• Fix equality of WrappedArray.ofRef (for Spark, #7156)
• Numerous compiler performance improvements (#7067, #6696, #7147)
• Improve performance of HashMaps, Any.## (#7265)

Further highlights:

... (truncated)

• 38cd84d Merge pull request #7469 from lrytz/b10812-2.12
• 3edeaac [backport] Don't emit forwarder in mirror class for bridge methods
• 25c7215 Merge pull request #7429 from retronym/topic/rt-annotations
• 954c5d3 Stabilize order of annotations in the class file
• bd441b7 Merge pull request #7433 from retronym/backport/7313
• 5e4d34a [backport] Fix potential bugs in SpecializeTypes
• 068338b Merge pull request #7428 from retronym/topic/null-safe-current-run-profile-trace
• 8f9fa5e Merge pull request #7422 from adriaanm/t11162
• ca4b94f Make access to current run during Run.<init> safe for Global subclasses
• 5f83efe Extractor type may depend on (implicit) arguments
• Additional commits viewable in compare view

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