* helper method to detect disconnected state
* clear ATC info if disconnected or not available
* unit test for "finders"
* added Doxygen file
* formatting frequency in text message tabs
* fixed issue with parsing, only default locale is used. Now user's local possible
* allow to load FP for other callsigns as well (voice capabilities)
* Improved handling of CTime, inclusive bug fixes and time formatting
* Max. lengths for FP fields as const value (so we can change it if required)
* Load FP from GUI component
* Samples for PQ classes
* Adjusted depending classes (e.g. client)
added ConnectionStatus enum values DisconnectedFailed and DisconnectedLost
added extra argument to connectionStatusChanged signal, containing the socket error message
Changed FILE_PATTERNS config in Doxyfile so Doxygen only looks at headers, not cpp files.
Reverts some changes of commit:116db9a (e.g. terminate() is an internal signal of CNetworkVatlib, but still needs a doxy comment because all signals are public).
* 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)
