'master' branch renamed 'main'

[RichardWallis]

In particular if you see this message and were about to file a new issue, please read on:

Your configuration specifies to merge with the ref 'refs/heads/master'
from the remote, but no such ref was fetched.

The branch previously known as master [i.e. default] in the schemaorg repo has been renamed main.

For everyone collaborating solely through the website, this should not really affect you. If you are using git tools to manage a local copy of our repository, you will need to take a minute to update your copy to match.

This process involves:

• Creating new branch main as a copy of master
• Making that branch the default for the repository
• Rebasing all PRs to be based on main
• adding documentation for developers to understand what to do on their systems

For details see file: https://github.com/schemaorg/schemaorg/blob/main/MASTER_BRANCH_RENAME.md

[RichardWallis]

Done

[danbri]

Thanks @RichardWallis! I've announced it on Twitter. See also https://github.com/github/renaming for how to do this on other repos, and for background on this renaming.