* Add source_url_pattern to be able to use the "link to source" button
* Add README.md as an "extra" where it wasn't already
* Add a `main` setting. They all have a very obvious main module. Set
that as `main`, so a user is shown this immediately instead of a list
of usually only this module.
* Fix CI errors, update GHA deps, update versions
* output syntax
* remove OTP 22 tests
* set concurrency to cancel in progress
* whitespace
* incompatible vsns and failed test
* Try pulling excludes out
* Escaping
* Just drop < 1.13 until this can move to workflows
* quote