Rubato resampler 0.11 is now realtime safe

Rubato 0.11 was just released. I worked with the maintainer to make it realtime safe. We added a new API that outputs to a preallocated buffer instead of allocating new Vecs each process call. Logging is also disabled by default. Additionally, the maximum/minimum resampling ratio supported by the asynchronous resamplers are now configurable when the resamplers are constructed.