* PIThread::~PIThread() now unregister itself from introspection, if terminates than show warning
* PISystemMonitor now correctly stops
* PIPeer now can correctly stopAndWait
* PIPeer::destroy(), protected method for close all eths and threads
* new PIINTROSPECTION_STOP macro
* Introspection now can be correctly stopped by macro, more safety
ClientServer:
* ClientBase::close() stop and disconnect channel
* Server clients clean-up now event-based
* No warnings on client destructor
pipacketextractor Header mode now more flexible
fix splitTime mode
more refactoring
add virtual override to functions
remove piforeach
replace 0 to nullptr
iterate over pimap via iterators
replace CONNECTU to CONNECT# with compile time check
