* 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
* rename CStatusMessages to CStatusMessageList
* rename NetworkVatlib to CNetworkVatlib
* replace all occurrences of Realname with RealName (correct camel case)
* CSequence method corresponding to CList::append is push_back
* don't compile the qdbuscpp2xml metadata plugin by default
* CAircraftIcao string members always trimmed and capitalized
* added CComSystem::roundTo25KHz
* using epsilon comparison in a couple of places
refs #81
* storing callsign and realname as QByteArray instead of QString makes it easier to ensure that C-strings passed to the shim have lifetimes coincident with the shim
* added a bit more error handling and invariant enforcement
* now we terminate the connection automatically on fatal errors
* added first doxygen comment (first of many)
