Added an hour meter functionality that counts the time the passes and stores it constantly to a file as a json readable object. When the program is restarted, it reads the value from the file and continues where it left off. This is pretty crude right now. For instance, it doesn't matter whether the motor is actually turned on or not. It would also be useful to record time*rpm to count the number of times the motor spins.
Added much more functionality to the cumulative hour meter. It now also logs time x RPM and time x thrust to provide average values of each. It also only logs when the RPM is greater than zero.