Rework _all_ of the I2C

This moves all of the I2C code to IRQ based (not DMA _yet_).
But it does drastically improve reliability, especially of reads.

workspace/TS100/Core/Drivers/MMA8652FC.hpp

@@ -17,7 +17,7 @@ public:
 	//Returns true if this accelerometer is detected
 	static bool detect();
 	//Init any internal state
-	static void initalize();
+	static bool initalize();
 	static Orientation getOrientation(); // Reads the I2C register and returns the orientation (true == left)
 	static void getAxisReadings(int16_t &x, int16_t &y, int16_t &z);