Migrate automated testing away from Travis CI

[jpgill86]

In November 2020, to curb abuses of their services, Travis CI announced a new pricing model. Regarding support for public, open source projects, they initially said the following:

"We love our OSS [open source software] teams who choose to build and test using TravisCI and we fully want to support that community. [...] We will be offering an allotment of OSS minutes that will be reviewed and allocated on a case by case basis. Should you want to apply for these credits please open a request with Travis CI support stating that you’d like to be considered for the OSS allotment."

They later tried to reassure open source developers, saying "Open source accounts, as always, will be completely free under travis-ci.com".

However, many have reported that requests for OSS minutes are being ignored or put on hold indefinitely. My own multiple requests have gone unanswered for nearly a month. [Update: I finally received a response nearly 5 months after my initial request.]

It is clear that Travis CI is no longer a viable option for free testing for open source projects. Paid plans start at $69/month, which is not a reasonable price for small open source projects operating without a budget, especially when free alternatives exist.

As of today, I have completely run through the limited one-time allotment of minutes given to all users in November, and so I am unable to run any tests on Travis CI. This project will need to migrate its testing pipeline to another service. GitHub Actions seems nice.