+ - better error message for broken BUILDARGS
+ - provide 'no Moo::sification' to forcibly disable metaclass inflation
+ - switch to Devel::GlobalDestruction to correctly disarm the
+ Moo::sification trigger under threads
+ - make extends after has work
+ - name subs if Sub::Name is available for better stracktraces
+ - undefer all subs before creating a concrete Moose metaclass
- fix bug in _load_module where global vars could cause mis-detection
of the module already being loaded