Convert operator arguments to references, const correctness. #161
Change in to input for ControlGenerators for consistency
Signal flow operator takes const RHS reference, returns new copy of rhs with input
Revert "Convert operator arguments to references, const correctness. #161"

This reverts commit cb83fef67deaf35114db2e2c70525a0c1d2612f8.
Pass by value and return by value for all operators, errywhur. #161
Remove a few more pass-by-references
Merge pull request #162 from TonicAudio/ND-OperatorReferences

Remove all pass-by and return-by-reference
Added missing use of constant for right channel in stereo delay
Fix delay line indexing out of bounds in rare cases
Add padding to biquad vectors to fix memory access error (apparently vDSP_deq22 needs a few extra samples in its arrays to avoid going out-of-bounds)
Merge branch 'master' of https://github.com/TonicAudio/Tonic

Conflicts:
	src/Tonic/ControlConditioner.h