Not maintained - forked, fixed, and published new GitHub Action

[discdiver]

Leaving this here for folks trying to use this extension. Thank you for making this action! Unfortunately, this action doesn't appear to be maintained.

I have forked this repo and updated and published an action at https://github.com/marketplace/actions/merge-from-upstream-repo

Adding this GitHub Action would always cause the action to fail because unrelated histories cannot fast forward merge.

As suggested in Issue #11 by @lcenchew, getting the username and email and changing the merge command solved the problem in the action. The action now allows unrelated histories.

I fixed the README instructions and simplified them.

[lcenchew]

Thanks! unable to spend more time due to work.

[getBoolean]

Thanks! I was going crazy thinking I was doing something wrong