ENH: add utility functions for reshaping the wavedecn/waverecn wavelet coefficients
ENH: add utility functions for reshaping the wavedecn/waverecn wavelet coefficients

The lists of coefficients for an n-dimensional transform are concatenated into a single,
large n-dimensional array.  This form is needed by a number of image or signal processing
applications.  The reverse transformation is also provided (array_to_coeffs).

rgommers/pywt,eriol/pywt,kwohlfahrt/pywt,eriol/pywt,grlee77/pywt,michelp/pywt,kwohlfahrt/pywt,michelp/pywt,rgommers/pywt,grlee77/pywt,rgommers/pywt,michelp/pywt,kwohlfahrt/pywt,PyWavelets/pywt,rgommers/pywt,PyWavelets/pywt,eriol/pywt