NaviPOWM: version 0.2.0 released

NaviPOWM is planned to be a navigation system capable of running on a variety of operating systems. At this time, only OSM based map data is supported. Realtime routing engine is planned in a later version. Geocaching and city guide functionality are also planned.

fixed bugs:
- 1900169: QT Threading Assert Failure in r85
- 1978789: DEMO mode doesn't accept absolute file paths to NMEA log file
- 2263120: Black display on less than 32 bit color depth

implemented feature requests:
- 1834080: Start with last GPS position
- 1834980: WM: send "still alive" to OS.
- 1837397: Make rendering faster (esp on Pocket PCs)
- 1957886: Snap position to nearest way
- 1957887: Don't react on gps coordinates when vehicle is stopped
- 2150972: Make font size for map artifacts configurable

other:
- new map format
- compensate GPS receiver lag (configurable)