With Dockerized tests (#1227) we're ready to set up Travis CI for this repo. Here's their docs page: Using Docker in Builds - Travis CI.

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• Initial implementation was Run tests in Travis #1381. We reverted it in Revert "Run tests in Travis" for now #1394 as the tests were failing at that point.
• Tests were improved in Improve Dockerized testing infrastructure #1389 and are passing since Make tests pass on the updated testing infrastructure #1400.
• With that, there's a new PR adding Travis CI build, Have Travis run tests #1415.