Update README
SMTP extended error codes stored in $smtp->error
Added HELO/EHLO reply parsing. Corresponding get methods: getServerExtensions(), getAuthAllowed(), getTLSAllowed()
Auth method selection added, according to STMP extensions list
A little bugfix
Update NTLM SASL lib
 This is still pretty old, bad code, and I think it's incomplete, and I don't have an NTLM system to test against. Should probably be removed.
Fix SM image
$helo_rply recovered. SMTP extension methods reconsidered (refer to comment)
Merge pull request #311 from heronman/master

A bugfix in SMTP::authenticate, plus some improvements
Code cleanup
Changelog