support imported logger or no longer(default)
splits submit get right .PDU
bugfix this.log to me.log
update msg.readHeader, parse SN to 3 parts
MSG read head bugfix, add instance member
do not repeat gen split seq for the 1st piece
add logger for nodeSP
v0.2.0 publish

first used in QHT SAAS Application
nodeSMG remove testing server.listen