MAINT: remove unnecessarily restrictive test on sequence type at start of waverecn
MAINT: remove unnecessarily restrictive test on sequence type at start of waverecn

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