log: Fix compiler warning.
slre: Use logging assert macro. Remove test code.
sdu: Check for correct bit when reconnecting.
event: Clear all handlers on stop.
sc: Leave chSysInit() for the main application.
nmea: Use logging assert.
F4 Discovery: Define PA2 as test platform pin.
RuuviTracker C2: Define I2C SCL pin as test pin.
RuuviTracker: Disable unused ChibiOS features.
main: Call chSysInit() from the main application.
build: Include testplatform to build.
Power: Add new application to test sleep modes.
tracker: WIP sleep modes.