Release Expat 2.6.1 (ETA 2024-02-29)

[hartwork]

Regular releases:

• Bump .so version info, document in change log
• Bump release version everywhere (including doc/reference.html)
• Fill release date (both change log and man page date)
• make distcheck source tarballs using ./distribute.sh
• Build Windows installer using AppVeyor CI — https://ci.appveyor.com/project/libexpat/libexpat/builds/49295103/artifacts
• Build Windows binaries zip file from installer
• SourceForge:
  • Upload Windows installer and binaries zip file
  • Upload source tarballs + .asc GPG signature files
  • Make one new source tarball default download for all but Windows
  • Make new binary zip file default download for Windows
• GitHub:
  • Create signed Git tag and push it
  • Create new release — https://github.com/libexpat/libexpat/releases/tag/R_2_6_1
  • Upload source tarballs + .asc GPG signature files
  • Upload Windows installer and binaries zip file
  • Close current milestone and create a follow-up one
• Website
  • Add news item — libexpat/libexpat.github.io@f2d1d58
  • Sync API documentation — libexpat/libexpat.github.io@acc04f5
• Let the community know:
  • Mail Expat distro maintainers directly
  • Write to the xml-dev mailing list — TODO
  • Blog about it at blog.hartwork.org — TODO
    • Submit to Hacker News — TODO
    • Submit to Lobsters — TODO
  • Blog about it at xml.com — TODO
• Bump ebuild in Gentoo — gentoo/gentoo@9ccbea3

Specific to 2.6.1:

• n/a

Related downstream issues and pull requests:

• Gentoo — gentoo/gentoo@9ccbea3