PermissionsRequiredMixin: Add helper functions for overiding
Subclass PermissionRequiredMixin in MultiPermsRequiredMixin

Allows for better code re-use and overriding of default behavior.
Update docstrings and comments for clarity.
Update doc string
Merge branch 'master' into pr/67
Make it possible to use CanonicalSlugDetailMixin with custom url kwargs
doc updates
Added a MessageMixin.
allow ugettext_lazy-wrapped strings for form messages
Merge branch 'master' into pr/67
changelog
docs update
Merge branch 'master' into pr/98
changelog
bump to 1.4.0
adding versions
need to include this
smarter versioning
address chris' issues
Merge pull request #117 from brack3t/fix/docs

Cleaner docs, more examples, better cross-linking.