SMTP client library release with attachments support

SMTP client library release with attachments support

Configuration improvements and small README fixes.

New improved MailSender release

Added NOOP, VRFY, EXPN, RSET smtp commands support

Low level smtp client with enceyption and authentication support

smtp release with support of encryption and authentication

smtp release with SSLv3 support (still no auth supported)

Ready-to-use smtp client (still no support for SSL/TLS and Auth)

Compilable connectable client