TTS v0.0.2 released

[erogol (Egolge)]

I just released v 0.0.2;

• guided attention
• initial TF 2.0 support for inference
• convert Torch Tacotron2 models to TF 2.0 for better deployment options.
• a ton of refactoring
  etc.

Thanks for the contributions and discussions.

PR link: https://github.com/mozilla/TTS/pull/379