Amfm-decompy

- error due misuse of the numpy's "ones" function in spec_track function from
pYAAPT fixed. Thanks to Paritosh Gupta for reporting it.

- issue with incorrect high values at the beginning and at the end of
PitchObj.samp_interp array fixed. Thanks to Esther Judd-Klabbers for reporting
it.

- print functions updated in order to allow compability with Python 3. Thanks to
Javier Villalba García for reporting it.
- "xrange" function replaced by "range" in order to allow compability with
Python 3.
- "thread" module replaced by "raise KeyboardInterrupt" in pYAAPT.py and
basic_tools.py.
- corrected the "VisibleDeprecationWarning" regarding the misuse of float
numbers as argument to numpy.zeros() and as array indeces in pYAAPT.py.

- issue with the interpolation of short voiced frames fixed and also minor
corrections in the code. Thanks to Michał Dankiewicz for reporting and fixing
them.
- "UnicodeDecodeError: 'charmap'" issue in setup.py fixed and also an extra
workaround to avoid it added. Thanks to Javier Villalba García for reporting
it.
- corrected the array lenght mismatch in the edges_finder method from the
PitchObj class in pYAAPT.py.
- corrected the "VisibleDeprecationWarning" regarding the misuse of float
numbers as array indeces in pYAAPT.py.
- requirements and classifiers added to setup.py.
- distutils replaced by setuptools in setup.py.

- segmentation fault issue in pYAAPT.py fixed.
- online documentation added.

- several bugs related to the analysis of 44,1 kHz files fixed. Thanks to
Tomasz Toczyski for reporting them.
- "growing pitch and merit vectors" bug in the peaks function from pYAAPT.py
fixed.
- "Stop in Dynamic" exceptions in path1 function from pYAAPT.py removed. They
were inherited from the original MATLAB code, but apperently don't have a
real use or meaning.
- internal interpolation functions changed from spline to pchip in order to
keep the fidelity to the original MATLAB code and also to produce better
results.
- "pchip" option added and set as default to the PitchObj method "upsample" in
pYAAPT.py. This interpolation method is favored over "spline" because
produces less horrible pitch spikes.
- "single sample upsample" bug in PitchObj method "upsample" from
pYAAPT.py fixed.
- support for stereo files added.
- documentation updated.