1.1.0: Get commit by SHA. (#52)
* Added commits model * Added nock support * Get commit by its SHA * Deleted * BUG FIX: in appending commit ID * Supported mocking for GitlabFacade. Corrected the unit test. * made the test more restricting * Post review part 1 * Get commits from the branch * fixed warning * BUG FIX: url handling in TagClient * deleted GitLabHttpFacade * fixed imports in test project * implemented tests by mocking HttpClientHandler