Fixed issue 110. Added an extra kwarg to BrowserIDBackend.authenticate that is now being passed to verify.
Add prasson2211 to AUTHORS file and update CHANGELOG.
issue 109 - unicode in extra arguments to the verify function
rolling rolling rolling
Update changelog for fix #109.
Add note to docs for template_context_processors
Merge pull request #120 from wraithan/docs_note

Add note to docs for template_context_processors
Fix #105: Improve documentation and add more logging.
Fix minor nits

* tweak get_audience docstring for clarity
* change log to logger, nix .format() calls
* tweak site_url checking
* invert SANITY_CHECKS setting: Peter likes False by default, so this
  inverts the name and value.
* move sanity_checks to base for reusability
Fix notty typo