A list of features that may be nice in the future:
* on_destroy/on_end callbacks
* end_twice counter for end() called twice (currently only emits warnings)
* Manual on writing new guard classes
* faster/smaller guard class
A list of features that may be nice in the future:
* on_destroy/on_end callbacks
* end_twice counter for end() called twice (currently only emits warnings)
* Manual on writing new guard classes
* faster/smaller guard class