Version 1.70: August 30, 2017 - See www.RaceTac.com for more detail.
+ NEW: Show SOG even without a course set.
+ NEW: Chart option to show a bearing line to current Mark.
+ NEW: Access Chart Options by touching the center button.
+ FIX: Crash in Voice timer mode when 'US' locale not loaded on device.
+ FIX: Some devices on Android 6.0.1 do not report speed. Fixed.
+ FIX: A couple of rare crashes.