Added constant version of () (row, column) operator
SpreadParameters const fix.
Introduced and implemented synced inputs, that are copies of the input
in sync with the crossover latency.
ZeroPhaseCrossover: Implemted and tested synced inputs
Crossovers: introduced concept of a direction. You can now reverse the
driection in which the crossover works: (relative to frequency band
index) from LOW to HIGH (default) and from HIGH to LOW.
MultibandRmsLimiter: Working on configuration of the thing.