- FIX: Segmentation fault when GPSD (<5) cannot be opened
- FIX: Suppress unnecessary 'gps_waiting' call in GPSD drivers
- FIX: Do not signal device activity faster than user can see
- FIX: Do not process irrelevant AIS data types (in GPSD AIS driver)
- MOD: Reordered buttons in a more (personally?) intuitive way
- NEW: Added 'additional actions' button, allowing more and better
       controls for overlays' content ordering
- NEW: Added 'order invert' action for overlays' content ordering