Parallel-wavegan

- Fixed wrong loss naming
- Fixed shuffle in distributed training
- Fixed pad mode
- Updated to be able to change PQMF paramters

- Fix numba version issue
- Support multi-key hdf5 scp format
- Support npy scp format

What's new

- Support Multi-band MelGAN
- Support Full-band MelGAN

What's new
Scripts

- Fix the update order 131 132

Recipes

- Add `egs/libritts/voc1`
- Update structure 134
- Add template recipe 141

What's new

Scripts
- Support `--pretrain` option in training
- Support `--skip-wav-copy` option in normalization
- Support `scp` style input for all `/bin` scripts for ESPnet compatibility
- Better parallelization (much faster in the case of the large dataset)

Recipes
- Fix `format: npy` support
- Add VCTK recipe
- Add `melgan.v3` config
- Add `parallel_wavegan.v3` config

What's new

- Support more recipes
- Support new residual discriminator
- Support MelGAN generator
- Support MelGAN discriminator
- And more refactoring...