we should be importing blessed()
Pass real current state to callbacks, rename to resolution_callback

	modified:   lib/MooX/Role/DependsOn.pm
	modified:   t/depends.t
Merge branch 'callback-state'

* callback-state:
  Pass real current state to callbacks, rename to resolution_callback
v0.002001

  - Add circular dependency callbacks

  - Deprecate 'callback' in favor of resolution_callback, which is passed
    references to the actual in-use state for scary munging purposes