lib/rss2mail/rss.rb (get_body): Rescue SocketError (TCPSocket.open).
lib/rss2mail/{feed,rss}.rb: Catch any exception while parsing/sending.
lib/rss2mail/feed.rb: Added support for SMTP and LMTP transport. (Untested)

Idea and initial implementation by @stephengaito.
Added plugin system.
v0.3.0