SCRAM-SHA-1 Authentication Method Working.

SSL working. Fixes ubiety#1.

Had strange behaviour caused by not clearing the message buffer. If a…

… new message was shorter than the previous it wouldn't clear it out leaving stray tags that were parsed causing problems. Compression now works with zlib built into the socket code. Still have to workout how to get it working as a stream to allow replacement and new compressions.

Moved a bunch of persistent data to the Settings class. API is broken…

… from previous iteration so version updated to 0.4.

Added a settings class to specify authentication methods

SCRAM finshed but not working.

More SCRAM work

Forgot to set id and password in refactoring. Now fixed.

Signed-off-by: Dieter Lunn <coder2000@gmail.com>