Args aggregation style encoder + forwardtts

Merge pull request coqui-ai#1027 from coqui-ai/dev

v0.5.0

Merge branch 'dev' of https://github.com/coqui-ai/TTS into dev

Merge pull request coqui-ai#914 from coqui-ai/dev

v0.4.2

Merge pull request coqui-ai#891 from coqui-ai/dev

v0.4.1

Bump up to v0.3.1

Merge pull request coqui-ai#803 from coqui-ai/dev

v0.3.0

Merge pull request coqui-ai#793 from coqui-ai/dev

v0.2.2

Merge pull request coqui-ai#777 from coqui-ai/dev

v0.2.1