Renaming the 'master' branch of the source code repository

Since JSHint's inception, the project's source code has been maintained using the Git version control software, and the central development branch was named "master". Today, we have renamed that branch to "main".

This change should not effect any contributions that are currently under review, but contributors should update their local repositories accordingly. These commands will do the trick:

git branch -m master main
git fetch origin
git branch -u origin/main main
git remote set-head origin -a

If you have chosen a different name for your "origin" remote, then use that name in place of the word "origin" in the commands above.

As always, please don't hesitate to contact the maintainers if you need any assistance!