finalize!'ing a Chain will also finalize all it's Operations- Changed attribute naming of
StepFailure:.operationwill now give the operation class of the step - was.stepbefore.stepwill now give the name of the step (which Operation failed) - was.step_namebefore
- Around Hooks for Chains
finalize!- freezing Chains and Operations, to prevent further changes
- Operations check their config and raise if any is missing
- Initial release