Fairly long list of bug fixes, tweaks, and feature additions
+ Multiple changes to deal with unit problems (labelling or conversion)
+ StatsStreamer refinements for Sleep Mode
+ Date range selection on export
+ Lock stats and locs files
+ More error dialogs
+ Support for firmware version in overview tab
+ Change range of temp values to match car (HVAC tab)
+ Highlight calendar days with trips (Trips tab)
+ Various smaller bug fixes
+ Tweaks to Mac app bundle build code