Creating a new github release (creating tags in git)

To create a new github release you'll want to first create a git tag in your repo. There's a good article on tagging here.

Show tags:

$ git tag
20150409

Tag a particular commit:

git tag -a 20150408 4abcdefg051f382098493f6043482f13437adf05 -m "Pre format change"

Push your new tag:

$ git push origin 20150408

You can now see it in the github web interface and can add notes etc. and turn it into a release.