Create crossfade utility function and apply it to EQs as an example
style cleanup
make it clear that crossfader util is linear
Apply crossfade interpolation to master and headphone output, and pregains.
address review notes
Fix pregain buffer crossfading
Fix master mix buffer crossfading
abandon headphone buffer crossfading for now, it's got too many moving pieces
cleanup
Tweak caching functionality so we aren't deleting and recreating the cache every time.
start implementing ramping functions
finish implementing ramping functions
typos
delete all SSE hand-optimized functions from sampleutil