Happy Yodeling

Corpora

• HiFiTTS data prep (#410)
• CMU Indic data prep (#411)
• ADEPT data prep (#413)
• Reduced memory usage in CommonVoice data prep (#414)
• fixes in Switchboard recipe (#419)

New features

• Saving and restoring the sampler's state for resuming training exactly where it left off (#417, #418)

General improvements

• CutSet.describe() doesn't need pandas anymore (#412)
• Adding torchaudio sox_io audio reading backend and making it default (#414)
• Support for Python 3.9 (#415)
• Adopted black for code style (#420)