CHI 0.22 released

[Jonathan Swartz]

0.22 May 13, 2009

* Implementation
- Switch from Mouse back to Moose - six week experiment over. Once
we started using roles,
Mouse became increasingly unattractive and the Moose community
encouraged us not to go
further with it. We can hope (or help ensure) that Moose
installation and startup time improves.
- Moved subcache code to a separate role,
CHI::Driver::Role::HasSubcaches, resulting in much
cleaner code. API remains the same -- activated via l1_cache and
mirror_cache options to CHI->new.