Working with the stepper motor.
Some semblence of a library starting to emerge...
Slight changes to the stack implementation.
Started work on the sensors.
Made the libraries more . . . classy.
A mayrid of problems with the Motors class, mostly the AccelStepper.  Tried a namespace instead - failed pretty badly.  Now, a class with all static members seems to be the only option.
(Hopefully) fixed the problems with the Motors class. Motors and Sensors are now static classes.
Basics should be covered.