* threaded reader were normal members causing a crash when those were moved in their own thread
* we need own event processing for unit test
* Network request needs to be generated in main thread
* don`t shutdown readers on QCoreApplication::aboutToQuit, let CApplication handle it
* use CApplication in unit test (as in real world)
Unrelated:
* access global setup via application
* Naming convention: "preset" only when disconnected, "send" only when connected, "set" both
* Every asynchronous pair is named as in "sendFooQuery" and "fooReplyReceived"
* Moved LoginMode from CNetworkVatlib constructor to INetwork::presetLoginMode
* Callsign and ICAO codes can only be changed when disconnected, so have their own "preset" methods
** Callsign and ICAO parts of setOwnAircraft are therefore ignored
** CUser part of setOwnAircraft is ignored, in favour of the CUser part of presetServer
* CNetworkVatlib takes care of reconstructing m_net if the LoginMode is changed
* INetwork setOwnAircraft slots
* ATIS received shimlib callback triggers separate VoiceRoom and LogoffTime signals
* INetwork statusMessage signal emitted in response to shimlib errors
* INetwork::ConnectionStatus added a DisconnectedError value and toString conversion
* INetwork::isConnected method
* Argument in CNetworkVatlib constructor to enable stealth or observer mode
* Update CLI sample, tests, and CContextNetwork accordingly
