Description of changes:
Replaces Travis with GH actions. Also uses Gradle in CI for the first time, so this will test if the CI works with for the new layout.
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Description of changes: Replaces Travis with GH actions. Also uses Gradle in CI for the first time, so this will test if the CI works with for the new layout.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.