fix a bug and modify the overlap function
start connection
modify some model
connection doing
connecting
connecting
fix a overlap bug
connection finish
two word connection finished
poem move doing
poem move
Added store/restore states controller, working correctly
need to accomondate
modified Kuan's version which could protect/unprotect words
poem move bug fixing
poem move bug fixed
connect finishing
connection finished
disconnect finished
bug fixed
not allow two overlap
super bug fixing