Ticket #190
Ticket #190 Source filtering (IP-range) for PD subscribe
simple source discriminator demo
renaming echoSelect -> echoCallback
missing log parameter
#189 timeout-value
#186 Potential SEGFAULT in case of PD timeout
Ticket #188
Changed to XML Parser, already included in Qt
moved socket-to-be-freed marker into the belonging iteration loop, this solves a part of #177 - the notification of listeners is not in