non-us-ascii character sets in headers and bodies. Some API changes
(with DeprecationWarnings for the old APIs). Better RFC-compliant
implementations of base64 and quoted-printable.
Updated test cases. Documentation updates to follow (after I finish
writing them ;).
the separating semi-colon shows up on a continuation line (legal, but
weird).
Bug reported and fixed by Matthew Cowles. Test case and sample email
included.