Each butterfly stage is now properly scaled to make FFT unitary. Minimize chances of half float overflow.
Smaller image for quicker simulator runs.
Fall back if half float NEON extensions aren't available.
Pooling of ISTexture and ISPBuffer working.
Transfomers now must explicitly decide what to do with the texture base type, allowing caller to select the texture base at the combinator level.
CPU transformer combinator.
Modify comparison to consider the type
Can now insert CPU bound transformers on half float buffers.