step_end event (#18) * Adds step_end event to the pipeline * Raises pipeline.step_end event after step manifest is closed * Adds unit tests to maintain 100% coverage * Adds unit test for published example
step_end event (#18) * Adds step_end event to the pipeline * Raises pipeline.step_end event after step manifest is closed * Adds unit tests to maintain 100% coverage * Adds unit test for published example