fix null pointer bug
fix removeEventHandler bug
add timer to connector for extend timeout ability
add timer for schedule task
add release version
add release version
add tags version4.0
add tag2.0 update
remove the NotificationCenter from SockNotifier...
we also need notifier suspend and resume functi...
remove suspend and resume from notifier for jus...
remove suspend and resume from notifier for jus...
add changes in VERSION file
the LfEventObserver have been removed
remove LfEventObserver for the user must handle...
add 2.0 to tags
LfEventObserver suitable poco-1.4
in SockNotifier::resumeObserver we should check...
add thread safety
remove layout file
alter VERSION
alter README and VERSION
add udp test and use bool isAuto to auto promot...