facets-bread collection of Hash-like classes

 The Hashery is a tight collection of Hash-like classes. Included among its many
 offerings are the auto-sorting Dictionary class, the efficient LRUHash, the
 flexible OpenHash and the convenient KeyHash. Nearly every class is a subclass
 of the CRUDHash which defines a CRUD model on top of Ruby's standard Hash
 making it a snap to subclass and augment to fit any specific use case.