IANA Provisional Registration Support

[halostatue]

• 1 minor enhancement:

  • Added a new field to MIME::Type for checking provisional registrations
    from IANA.

• Documentation:

  • Kevin Menard synced the documentation so that all examples are correct
    [Doc fixes #153].

• Administrivia:

  • Added Ruby 3.0 to the CI test matrix. Added windows/jruby to the
    CI exclusion list; it refuses to run successfully.
  • Removed the Travis CI configuration and changed it to Github Workflows
    [Remove Travis, use GitHub Actions #150]. Removed Coveralls configuration.
  • Igor Victor added TruffleRuby to the Travis CI configuration [Add Truffleruby to CI #149].
  • Koichi ITO loosened an excessively tight dependency [Loosen the dependency version of Rake (< 1.4.0) #147].

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[halostatue]

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[halostatue]

Reviewed 6 of 6 files at r3, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @halostatue)