Core: initial commit.
Core: libraries, configuration.
RoomActor: message logging.
Core: greetings.
Core: added libraries. Platonus library incorporated.
Project: moved to sbt.
Project: added .gitignore properties.
Project: org.ru -> ru.org.
New platonus library; new properties.
Fixed network, logging.
New platonus, core parser.
RoomActor: heart command.
build.sbt: fixed main class name
Merge pull request #1 from rexim/master

Wrong name of main class in build.sbt
CoreActor -> MessageActor.
Project: actors moved to actor package.
Project: various class renames.
Project: plugin system slightly modified.
Room: fully refactored to many actors.
Room: fixed /♥/ command.