Possible updates to the latest code. 

* Added printStats() to print stats even without debug
* Added serial message function DebugPrint to save some memory
* Added serial listener to enable temporary changes to drift offsets (very simple implementation)
  - For example, in Arduino serial monitor type x2.2 and then press Enter to change the xDrift compensation
  - Due to memory, only loaded when debug is turned off
* Tried to remove overloaded serial prints (convert Floats to Char first) but would have to do every one to save any memory so I just commented out the examples I started with using dtostrf
* Moved 3 variables to smaller types, identified with comments //was long or //was unsigned long