Rework the bytecode format to use a much simplified setup: a six-bit timer with

the top two bits reserved for pulse and index state. This is actually smaller,
bandwidth-wise, than the old version, and may be smaller than the crunched
version.

lib/fluxmap.h

@@ -48,6 +48,9 @@ public:
 
 	void precompensate(int threshold_ticks, int amount_ticks);
 
+private:
+	uint8_t& findLastByte();
+
 private:
     nanoseconds_t _duration = 0;
     int _ticks = 0;