Adding an attribute that has no associated_methods to a metaclass (or, more accurately, calling install_accessors on the attribute) will now cause a deprecation warning. This warning can be silenced by adding an explicit
C<< is => 'bare' >> to the attribute constructor. The only module I'm aware of that this will make noise for is MooseX::Traits, which I've given Jon a patch for. If someone has a better name, speak up. I don't care. 'bare' is the first thing I thought of. hdp.
