Following the recent changes about Travis CI's new pricing plan, the CI/CD services used by the library should change to keep building/testing on a Linux platform. This issue is about migrating the library builds from Travis CI to GitHub Actions instead.

Jeff Geerling explains the situation in is blog post: https://www.jeffgeerling.com/blog/2020/travis-cis-new-pricing-plan-threw-wrench-my-open-source-works