Merge pull request #19 from rexim/master

Implemeted quote syntax for the dollar parser
Core: fixed StringLike.split issue. Closes #20.
Room: fixed the "Wrong arguments" message.
Room: non-deterministic zxc-mode implemented.
LogParser: removed flood logging.
Messenger: implemented rudimentary message resend feature. Closes #11.

Also, refactored something.
Project: relevant classes moved to the messenger package.
Messenger: all listener classes decoupled. Closes #26.
PrivateHandler: ordinar private messages support.
Project: used platonus 0.1.18.
Small development environment changes.
Added parsers for slash and dollar syntaxes.
Core: New parsers have been integrated into bot's infrastructure.
Core: Finally removed that ParserMode
PetMessage: case classes without a parameter list have been deprecated