snarfed/activitystreams-unofficial — pull request #15 by kylewm (2014-08-03 22:23:32+00:00)
Title: publish: improve error reporting for comments, likes, and shares

- change create methods to return a tuple containing the result and
a descriptive "failure" object (instead of throwing
NotImplementedError)
- give informative error messages when publishing comments, likes,
or shares without a target url for the given silo
- added unit tests for the more detailed error reporting for facebook
and twitter publishing

ref issue snarfed/bridgy#223