Replace custom lifecycle with AS::Notifications
Merge '2-8-stable' into devin/as_instrumentation
Revert unintended change

Not sure why this got deleted. It was not intentional
Provide a friendly transition path

This will warn users that Lifecycle events are being deprecated in favor
of active support notifications.
Make deprecation warnings more visible
Fix whitespace error
Use $stderr to print deprecation warnings
Merge pull request #139 from devin-c/devin/as_instrumentation

Replace custom lifecycle with AS::Notifications