Release 2.9.4.1

[andreasabel]

Release BNFC-2.9.4.1:

• [x] branch release-2.9.4.1
• [x] change version to 2.9.4.1
  • [x] source/CHANGELOG.md (delete 2.9.5 entry)
  • [x] source/BNFC.cabal
  • [x] source/BNFC.spec
  • [x] docs/conf.py
• [x] write release notes
• [x] upload candidate to hackage
• [x] v2.9.4.1 release tag (creates binary releases)
• [x] finish github release
• [x] publish to hackage
• [x] update bnfc webpages https://github.com/BNFC/bnfc.github.com
  • [x] download binaries to download/ , rename to match scheme
  • [x] run new_release -i 2.9.4.1
  • [x] append release notes to `_post/...2.9.4.1....md
  • [x] commit new files and push
• [x] revert master to 2.9.5
• [x] fast forward master to release-2.9.4.1
• [x] close milestone
• [ ] announce on mailing list