Log Message:
Updated chromaprint to 1.4.

Switch to ffmpeg3.

Version 1.4 -- December 3, 2016
===============================

 - Fully streaming audio processing without any post-processing step for the \ 
fingerprint generation.
 - Many performance optimizations. Especially when processing long streams, \ 
operations should be faster and use less memory.
 - C++11 compiler is now required for building the library.
 - The public C API now uses standard fixed-size int types from stdint.h (breaks \ 
backwards compatibility).
 - All code written for the library is now distributed under the MIT license.
 - Kiss FFT is now included with the library and automatically used if no other \ 
FFT library is found.
 - Added support for using the FFTW3F version of FFTW3.
 - Boost is no longer used.