Return measurements in random length units
Return measurements in random length units

Previous commits returned the magnitude of the measurements in feet
only.

This commit changes the implementations of
- typical-vertical-depth
- typical-measured-depth
- typical-toe-measured-depth

to
- Return a measurement in a random unit if not unit supplied
- Return a measuremment in the specified unit is supplied

mrwizard82d1/test-utils-cljs,mrwizard82d1/test-utils-cljs