Paiutils

This release is highly incompatible with previous releases, though it is recommended that this release be used from now on as many bugs were fixed.

Adds
- Test coverage
- Docs
- Examples
- CycleGANs
- PGCAgent and A2CCAgent
- Variational Autoencoders
- Many other new features

Fixes
- All known bugs besides the audio bug with using different atypes and SoXs

Adds
- the vae module, which implements a variational autoencoder trainer
- functions for computing fbanks and MFCCs in the audio module

Fixes
- invalid comments
- Window initializing bug