Stego shape added, IsQuadrupedal function added

Now, 2 shapes are available - Dino and Stego.
Genome object contain IsQuadrupedal function, returning true and false.

How to obtain number of limbs (1/2 numbers, side view)
-> always 1 back leg by convention, no gene for that at all
-> query Genome for IsQuadrupedal()
-> if true, don't even ask for number of arms
-> if false, ask for number of arms conventionaly as GetTrait(chromosome
number for arms (4 I think), EnumTrait.NUMBER)
Merge branch 'master' of https://github.com/mgosciniak/evolveapet