LayeredGeneticFloats+FullyConnected+TanksBackprop

LayeredGeneticFloats works. Added a fully connected idea, and also tried
some backprop again. Tanks (based on stats class activity) backprop
actually WORKS, including bias term! Vector arithmetic is good.
Interesting results - came up with an even more optimal formula
Merge branch 'master' of https://github.com/mathnerd3141/Scifair2015

Conflicts:
	tanks.cpp