Git commit author shown when squash merging a pull request

The author of the Git commit created when squash merging a pull request is now shown before merging. Previously, the commit author was only shown when merging with a merge commit.

Also, if the user merging the pull request also opened it and has multiple email addresses configured, a drop-down now lets them choose a different email address to use for the commit's author.

These improvements are designed to ensure Git commits created by squash merging are associated with the correct email address.

Learn more about merging a pull request.