Added Water Tank.vi
Essentially an empty vi at this point.
Will become a super easy exercise that demonstrates the use of digital inputs.
Wrote water tank code
The exercise is essentially fully written, just needs testing and documentation.
Minor fixes
Fixed mislabeled relay VIs, fixed refnum blocks from throwing some obscure error.
Minor fixes
Fixed mislabeled relay VIs, fixed refnum blocks from throwing some obscure error.
Bugfixes
Fixed typo in case structure
Fixed water level from going below zero
Fixed weird merge conflict
Still getting used to this GitHub thingy
Added documentation
Water tank is pretty much done. Might do a bit of testing before merging.
Merge branch 'water-tank'

Conflicts:
	Training.vi