New version checklist:

- cd po; rm dopewars.pot; make dopewars.pot; make update-po; ./check-cformat.sh
- Add version number, date to ChangeLog.md
- Change stable version number in NEWS README.md doc/installation.html doc/index.html doc/windows.html
- git checkout -b release/x.y.z
- Change SVN to x.y.z in configure.ac and commit
- Merge into master, tag, and push:
  git checkout master; git merge --no-ff -m 'Merge for x.y.z release' origin/release/x.y.z; git diff origin/develop; git push origin master; git tag -s -u 22A3BF2B vx.y.z; git push origin vx.y.z
- Delete temporary branch:
  git branch -d release/x.y.z; git push origin :release/x.y.z
- make dist, upload tar.gz plus RPMs and .exes to GitHub and SourceForge
