Don't run test suite twice on PR: https://stackoverflow.com/questions/31882306/how-to-configure-travis-ci-to-build-pull-requests-merges-to-master-w-o-redunda
Don't run test suite twice on PR: https://stackoverflow.com/questions/31882306/how-to-configure-travis-ci-to-build-pull-requests-merges-to-master-w-o-redunda

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