MAINT: match variable names in Node2D to those in dwt2, idwt2
MAINT: match variable names in Node2D to those in dwt2, idwt2

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