Updating Deps and Exposing lower-level state

This release includes greenkeeper issues for updating dependencies( #43, #42, #54 ), some commits to account for the deps updates (#55,), and issue #51 for exposing the observationStack and remaining objects as properties on the Constructor Function (the class) to aid subclassing or plugins.

correctly dependency injecting can-namespace

#48

correctly dependency injecting can-namespace

#48

can-namespace

• updated to use can-namespace, can-cid, and can-types
• throwing an error if multiple versions of can-observation are loaded