classification based on frequency categories

- circuit classifies input into multiple categories
(NUM_OUTPUT_CATEGORIES). Fitness is computed as euclidean distance
(without sqrt) between distribution of categories produced by truly
random inputs (precomputed) and given set of test vectors (either
function or random). Well performing should maximize such a difference
for inputs produced by function and minimize for inputs taken from truly
random generator
Merge branch 'eacirc-memory' of https://github.com/petrs/EACirc into eacirc-memory