Update gruut to version 2.0

[synesthesiam]

Minimal modifications for the update to gruut 2.0.

• eSpeak phoneme databases have been re-built with the changes discussed here
• Whitespace is now preserved as per the discussion here

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For the future: gruut's text processing has been greatly expanded in 2.0, and the current text cleaners in 🐸 TTS interfere. For example, the sentence:

It is 4pm on 1/2/2013.

gets expanded via phoneme_cleaners to:

It is fourpm on one/two/twenty thirteen.

One way to solve this problem would be to use gruut itself as a text cleaner:

import gruut

def gruut_cleaner(text: str, lang: str = "en-us"):
    return " ".join(
        s.text_with_ws for s in gruut.sentences(text, lang=lang, phonemes=False, pos=False)
    )

which gets you:

>>> gruut_cleaner("It is 4pm on 1/2/2013.")
'It is four P M  on January second, twenty thirteen.'

[synesthesiam]

Python 3.6 bug was fixed in gruut 2.0.1. Re-running the checks should pass now.

[synesthesiam]

Python 3.6 bug was fixed in gruut 2.0.1. Re-running the checks should pass now.

[erogol]

I think we can make "stress" use optional by reflecting it to the model configs.

[erogol]

@synesthesiam do you plan to address the linter issue?

[erogol]

@synesthesiam do you have any docs about what is diff in Gruut 2.0 to link from the release notes?

[synesthesiam]

Sure, the release notes give a very brief summary of the changes. The docs go into detail, but don't contrast with v1.

Internally, gruut has changed significantly. I haven't written up anything about it yet, but I'd be happy to if you think any TTS users would find it useful.

[erogol]

I think it'd be useful to know what changed internally

[synesthesiam]

I've written up a small example here: https://rhasspy.github.io/gruut/#how-it-works

[erogol]

I'll merge this after fixing a couple of bugs

[erogol]

@synesthesiam I guess due to my force push, you have recurring commits in your commit tree. Can you rebase the code to remove them? Sorry for the inconvenience.

[Mic92]

TTS used to have similar phonemization for times builtin, have those been removed?

[Mic92]

I am talking about TTS/tts/utils/text/time.py