EasyID3 is not used for wav files

[dolkow]

mutagen$ cat demo.py
#!/usr/bin/env python3

import mutagen

for filename in ('tests/data/silence-2s-PCM-44100-16-ID3v23.wav', 'tests/data/silence-44-s.mp3'):
    f = mutagen.File(filename, easy=True)
    print('%-50s TPE1=%-20s artist=%-20s' % (filename, f.get('TPE1'), f.get('artist')))

mutagen$ ./demo.py 
tests/data/silence-2s-PCM-44100-16-ID3v23.wav      TPE1=piman / jzig         artist=None                
tests/data/silence-44-s.mp3                        TPE1=None                 artist=['piman', 'jzig']   

I tried just wrapping f.tags in an EasyID3 wrapper, but it failed ("'_WaveID3' object has no attribute 'read'").