[py] incref exception type before restoring it
[py] add get_norm/power and documentation to filterbank
[py] fix filterbank in double-precision mode
[py] filterbank power and norm are floats
[py] filterbank.set_triangle_bands can accept a float samplerate
[py] filterbank.set_mel_coeffs_slaney accepts float
[py] check for float in filterbank.set_mel_coeffs, improve parameter names
[py] add filterbank.set_power and set_norm
[filterbank] fix mel htk mode
[py] add filterbank.set_mel_coeffs, improve error messages
[python] fix error messages in filterbank
python/ext/py-filterbank.c: fix error message formatting, do not delete if not created
python/{ext/*.c,lib/gen_code.py}: complete PyTypeObject definitions
python/ext/py-filterbank.c: check input size
python/ext/py-filterbank.c: use new_py_fvec
python/ext/py-cvec.c: rewrite and simplify aubio.cvec, safer and better memory usage (see #49)
python/ext: simplify memory allocations, removed unneeded malloc/free calls
ext/: use new proxy functions
ext/: no more hell, use plain c
python/ext: continue preparing for python 3