Adding a basic and buggy IMAP4 implementation and tests.
Support for regex-based aliases (aka catchall) with tests.
Unified the mailbox for POP3 and IMAP4, added support for flags, UIDs, etc.
A little clean up and sync between POP3 and IMAP4 access.
First play with a script addresstype, which takes a callback.
Example of TwitPic it added. (Email to twitpic)
Finalised demo for: http://blit.ch/398h
Nicely degrading when config files are missing (log.err)
Merged changes from Yoan Blanc.