Store the identity url returned from authentication
Move identity_url into options.

I couldn't think of a good way to do this without relying on either the
existing callback mechanism (which would make that not be useful) or
changing the Faraday::Middleware API.
Add an interface for dealing with process approvals
Add process_approval doc
Add process approval examples
Add example query to find all things assigned to a user
Bump version patch im2
Merge branch 'add_process_approvals' into 33x