Migrate CI to GitHub actions, as Travis CI.org is no longer supported
This PR adds a basic GitHub actions file for CI. A couple of items to note:
It adds Gemfiles for more recent versions of Prawn
It runs against Ruby 2.6-3.0. Ruby 2.5 and earlier are EOLd. Ruby 3.1 is not included because it requires that prawn include the matrix gem explicitly, which is not currently the case in any released versions.
@ddengler Not sure if you're around / still maintaining this, but I thought I'd put in a PR to get CI working. Let me know if it needs any changes to get merged.
Migrate CI to GitHub actions, as Travis CI.org is no longer supported
This PR adds a basic GitHub actions file for CI. A couple of items to note:
prawn
include thematrix
gem explicitly, which is not currently the case in any released versions.