bug fixes
handles multiple inputs
Expr testing
testing OR multiple inputs
refactored Expr

put regexp all in one place and function callbacks all in one place
more Expr tests
added Expr tests to list
rewrote floor in BitCrusher with Expr
noting Expr changes
using Chebyshev instead of phaser

phaser didn’t work well for this example
Follower uses subtract
connect method from Tone.Signal
Tone.Pow exponential
Tone.Inverse multiplicative inverse of a number
Tone.Divide division
new class tests
ignore performance tests (for now)
switched bit crusher for distortion

same idea much better performance
simplified BitCrusher further
small modulo optimization