Log Message:
Update to 2.13:

version 2.13: Sun Jan  5 18:52:25 CET 2014

	Fixes:

	- optional 'from' and 'on' component in in-reply-to are comments
	  rt.cpan.org#89371 [Ward Vandewege]
	- mailcap \\\\ -> \\
	  rt.cpan.org#89802 [Kevin Ryde]

	Improvements:

	- fix typos  rt.cpan.org#87188 [D Steinbrunner]