Migrate CI to GitHub Actions, adding recommended Elixir and Erlang/OTP combinations #112
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This pull request migrate the CI from Travis CI to GitHub Actions, as requested by José Valim in this comment.
In addition, it makes sure all recommended Elixir and Erlang/OTP combinations are run on CI.
Quoting José Valim:
Please refer to the original discussion on dashbitco/broadway#188 for the full rationale.
Additional functionality: make sure there are no compilation warnings.
In case one wonders why not use
otp: N.x
for OTP as well as for Elixir, the reason is the following: actions/setup-elixir v1.4.0 uses semantic version resolution for Erlang/OTP, but Erlang/OTP version scheme does not follow SemVer and "In general, versions can have more than three parts.", sootp: 19.x
resolves to 19.3.6, not 19.3.6.13, as expected.