MH-E 8.1 released

Project home page at: http://mh-e.sourceforge.net/.

* Changes in MH-E 8.1

Version 8.1 fixes some issues with forwarding messages, respects the
MH environment variable, adds the abilities to use aliases with GPG
and show HTML even though it is discouraged. A new hook,
`mh-annotate-msg-hook', has been added.

** New Features in MH-E 8.1

*** Showing HTML When Text Is the Preferred Alternative

The `:' (`mh-show-preferred-alternative') function displays the
message with the default preferred alternative. This is as if
`mm-discouraged-alternatives' was set to nil (closes SF #1777321).

** New Variables in MH-E 8.1

*** mh-annotate-msg-hook

The `mh-annotate-msg-hook' hook is run whenever a message is sent and
after the scan lines and message are annotated. Hook functions can
access the current folder name with `mh-current-folder' and obtain the
message numbers of the annotated messages with `mh-annotate-list'
(closes SF #2032269).

** Bug Fixes in MH-E 8.1

*** Can't Use Aliases with GPG