Return well formatted authentication errors to the client
Log the reason for an error serveside but return a masked/generic reason to the client
Assert go errors by behavior rather than type.
Closes#144#145#160
Implements PATCH method on user and endpoint middleware for authnz
Implements `reset_password` (with token) and `forgot_password` endpoints
Added godoc comments for UserService interface
Shift to using testify/assert in test code
Multiple fixes/changes to the UserService API
