Authres

+ Added support for DMARC as described in draft-kucherawy-dmarc-base-00

--- 0.4 (2012-04-13 20:02)

* Update note on use of fail instead of hardfail for SPF results now that
the IANA registry has been updated and RFC 6577 published
* Fix doctests to run when authres is imported
! No longer will run as main, which wasn't doing anything anyway
* Split doctests and move most to authres/tests to make the docstrings
bearable
! Changed pypi classifier for development status to production/stable

--- 0.3 (2012-01-07 05:24)

+ Added support for comments on most header elements to object constructors.
Comments are correctly stringified from constructed objects, however
conversely, are not currently parsed from strings.
! The authres function and most object constructor signatures have changed in
terms of argument order to allow for new comment arguments. Using named
arguments is recommended.
* Added additional doctests from RFC 5451 examples

! Reworked API from scratch to be more properly OO, extendable, and
maintainable
+ Parse authentication results headers
! Started rework of doctests to match new API and be more readable
+ Specific subclasses for creating and parsing dkim, domainKeys, spf,
senderid, iprev, and smtp auth authentication methods