tests: run-coverage.sh becomes run-tests.sh

* Renames `run-coverage.sh` to `run-tests.sh` for the overall harmony
  with other inveniosoftware's Python packages.

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
version: post-release version bump

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
AUTHORS: addition of Anthony Sottile

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>