3.1.3 & 3.2.0-RC1 Release procedure

[Kordyjan]

• Close the 3.1.3 milestone
• Publish 3.1.3 artifacts to Maven via CI
  • On release-3.1.3 branch
    • In Build.scala: Set baseVersion to 3.1.3
    • In Build.scala: Set previousDottyVersion to 3.1.2
    • In changelogs add file with a changelog
    • Tag the branch as 3.1.2
• On main (Set reference version to 3.1.3 #15438):
  • In Build.scala: Set previousDottyVersion to 3.1.3
  • In Build.scala: Set referenceVersion to 3.1.3
• Close the 3.2.0-RC1 milestone
• Create 3.2.0 backports milestone
• Publish 3.2.0-RC1 artifacts to Maven via CI
  • Create branch release-3.2.0 from main
  • On that branch
    • In changelogs add file with a changelog
    • Tag the branch as 3.2.0-RC1
• On main:
  • In Build.scala: Set referenceVersion to 3.2.0-RC1
  • In project/MiMaFilters.scala: Remove all unnecessary exclude filters
  • In Build.scala: Set baseVersion to 3.2.1-RC1
• Release ecosystem for 3.1.3
• Wait for confirmation from tooling:
  • Metals
  • Scala CLI
  • Scala Native
• Release to SDKMAN
• Publish API docs for 3.1.3 stdlib
• Announce the releases
  • Make both GitHub releases public
  • Publish Blog Post on dotty.epfl.ch (Prepare the 3.1.3 release blogpost scala-lang#1393)
  • Open the 3.2.0 tracking thread https://contributors.scala-lang.org
  • Tweet the announcement blog post on https://twitter.com/scala_lang

[griggt]

Just a heads-up: although 3.2.0-RC1 has been tagged, for some reason the workflow ran as a normal push workflow rather than a release workflow, so no artifacts were published: https://github.com/lampepfl/dotty/actions/runs/2503916802

Also, the Windows CI is failing, seems to be from the merge of #14882

[WojciechMazur]

Scala Native compiler plugins for 3.1.3 are published (for SN versions 0.4.3 and 0.4.4)