Add --restart option, wait for implementing.
Merge branch 'master' into refactor
Add memory monitor.
Update server monitor.
Init cpu monitor, wait to implementing.
Update .getMemory()
Add memory is zero event.
Fix .getMemoryInWin32().
Change .getMemory() to .getValue().
Update.
Add server monitor.
Update interval.
Update.
Update.
Update.
Update cpu monitor in mac, waiting for implement in windows.
Add cpu monitor on windows.
Update cpu monitor.
Set default limit of memory monitor.
Update.