Entropy Gain for per-receptor NPS

[RenegadeLucien]

I'd need to experiment with it to get a definitive answer. I can see the value in having something like that, but it would be difficult to separate actual spikes/bursts from just natural variance in patterns (take a staircase for example: there are gaps of 5 notes between every left arrow, but only 1 between (some) down or up arrows, so the down/up arrows look much harder than the left/right arrows, and this could produce odd results for a difficulty change rate value. Would probably have to look at average difficulty over a short period of notes and use that to determine the difficulty change rate.