Merge pull request #65 from anatoliykmetyuk/develop

isEmpty method of the MessageHandlers is implemented
Merge pull request #66 from anatoliykmetyuk/develop

Debugger separated into a PureScalaDebugger and SubScriptDebugger
Merge pull request #67 from anatoliykmetyuk/develop

PureScalaDebugger is free from the bug (as far as tested)
Added object SubScriptDebugger2 so that this may be graphically debugged itself
Added object SubScriptDebugger2 so that this may be graphically debugged itself