Add new retry states #26
Description
Add:
- ABORT - stop processing the flow but don't revert anything
- IGNORE - continue processing the flow and ignore the error
In some situations, it makes sense for a task to throw a type of exception that is basically "there's nothing to do". Having a special retry handler to detect that and stop processing tasks on the flow, without reverting or marking anything as failed, would be helpful. This is what ABORT will be for.
In other situations, you may want a subflow to be able to fail and not impact any other tasks, just keep trucking along like nothing happened. This is what IGNORE will be for.