see also version independent topics.

• Status: developing
• release manager: naruse
• ABI Version: 3.1
• GitHub Roadmap:

• bump version.h to 3.1.0
  • done at 2020-12-25
• released preview1
  • https://www.ruby-lang.org/en/news/2021/11/09/ruby-3-1-0-preview1-released/
• release 3.1.0
  • https://www.ruby-lang.org/en/news/2021/12/25/ruby-3-1-0-released/

• without baseruby
• ruby-build
• cross compile