latest version,fixed concurrent error of iterator
Merge branch 'test' of
https://github.com/gycrazydog/distributed-algorithm into test

Conflicts:
	DA-Lab3/Resource/Logs.log
	DA-Lab3/src/nl/tudelft/da/lab3/msghandler/CapturedAttemptMsgHandler.java
	DA-Lab3/src/nl/tudelft/da/lab3/process/Sender.java