Heroku CLI Release Process

Ensure CI is passing bundle exec rake ci
Update version number in /lib/heroku/version.rb to X.Y.Z
Run bundle install to update the version of heroku in the Gemfile.lock
Update changelog.txt
Commit these changes git commit vX.Y.Z and push them git push origin master
Ensure CI still passes bundle exec rake ci
Release the gem bundle exec rake gem:release
Update the submodule in toolbelt/components/heroku git fetch and git reset --hard HASH where HASH is commit hash of vX.Y.Z
add git add ., commit git commit -m "bump heroku submodule to vX.Y.Z", and push git push submodule changes
Ask in #dx for toolbelt releases
Update devcenter changelog

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