[fix] Prevent exception when dump purged instance
[fix] cancel entries before close channel notification
[refactor] removed unused, not implemented setListening()
[refactor] Renamed RemoteServer.cpp -> DebugServer.cpp
[fix] Crash unbind() if nothing is bound to an EventChannel
[fix] onDebuggerLoop() now returns if its alive
[enhance] TcpServerSocket reports log when shutdown
[fix] Fixed various attach/detach handlings
[enhance] sq_getlocal() now reports at least 'this' when called upon native closure
[fix] Debugger handling of closure and native closure