Internal and cross-platform aligned malloc/free
Roll out LavAllocFloatArray/LavFreeFloatArray to all Libaudioverse objects that can benefit
Cmake option to enable sse
Write a simple addition kernel as a proof of concept/test to make sure things are toggling properly.  This provides little to no optimization, but provides a useful test case to ensure functionality.
Add a mixer profiling test.  This shows that actually the SSE2 addition kernel is about twice as fast.
multiplicationKernel: same as additionKernel, and for the same reasons
scalarMultiplicationKernel
Use scalarMultiplicationKernel to apply the mul step in doProcessProtocol
Add kissfft as a submodule