Refactor Binary State Machines to be able to switch between using AnyState blending and Binary Decision Tree.

[regzo2]

AnyState blending is useful for taking advantage of transition blending, Binary Decision Trees (not using AnyState, using float smoothing) are theoretically more performant.

[regzo2]

Partially implemented, will make it a togglable feature in the next minor version (1.3.1)