[yt-dev] Issue #1276: Run subset of unittests on Travis or Drone.io (yt_analysis/yt)

New issue 1276: Run subset of unittests on Travis or Drone.io https://bitbucket.org/yt_analysis/yt/issues/1276/run-subset-of-unittests-on-... Kacper Kowalik: * Identify the minimum set of tests that would fit the free tier * Setup webhooks Responsible: xarthisius