Added implementation of decrypt stream
Added basic implementation for scenario script parser
Added file manager
Added basic implementation of display and fixed spelling error
Bug fix for the parser
Added implementation of background change command
Added some debug info
Fixed bug that the last conversation is not appearing
Fixed bug that character clear command is not processed correctly
Added basic display code
Fixed empty background exception
Fixed conversation parsing not working properly
Added new scenario commands
Added new fields to ScenarioCommand
Added default command processing action
Added support for colored background
Added basic implementation of scenario selecting