python-wavefile 1.6.2: Format list inspection

• Dropped Python<3.8
• Incorporated enums for all the new formats supported by sndfile up to 1.0.31
  • Containers: mp3, opus
  • Encodings: NMS ADPCM, MPEGx Layerx
• Experimental: Api to enumerate, check and describe formats
• Added Writer.seek method
• Added example for whole-file load/save
• wavefile.save accepts 1D mono data for convenience
• PR#23 Incorrect implementation of saveWave method. Fixes #20. Thanks Sravan Patibandla (pbskumar)!
  • This will render some client code failing. But I applied it since
    it is coherent to have the same layout on saving and loading.
    Client code should now transpose the numpy matrix when saving with wavefile.save()