This project follows semver. So if you are making a bug fix, only increment the patch level "2.0.x". If any new files are added, a minor version "2.x.x" bump is in order.
To prepare the release commit, edit the
lib/execjs/version.rb
VERSION value. Then make a single commit with the description as
"ExecJS 2.x.x". Finally, tag the commit with v2.x.x.
$ git pull
$ vim ./lib/execjs/version.rb
$ git add ./lib/execjs/version.rb
$ git ci -m "ExecJS 2.x.x"
$ rake release