Layout of OAuth 2.0 components as Traits:

  As traits, many unspecified functions in the standard can be defined as hooks,
  but not implemented in this library, leaving the library as flexible as the
  standard.  The following (at least) are intended to be hooked, rather than
  implemented herein:

  * issuing and receiving HTTP requests
  * storing state
  * authentication of the client
  * session management of the user-agent
  * authentication of the user-agent, and actual user authorization mechanisms
Documentation updates, ptr to homepage