zsh-syntax-highlighting/release.md

Release procedure (for developers):

• Check open issues and outstanding pull requests
• Confirm make test passes
  • check with multiple zsh versions
• Update changelog.md
• Remove -dev suffix from ./.version;
  Commit that using 'git commit -m "Tag version $(<.version).";
  Tag it using git tag $(<.version);
  Increment ./.version and restore the -dev suffix;
  Commit that using 'git commit -C b5c30ae52638e81a38fe5329081c5613d7bd6ca5'.
• Push with git push --tags
• Notify downstreams (OS packages)
  • anitya should autodetect the tag
• Update /topic on IRC