Python 3.8 support

[lk-geimfari]

Does it support Python 3.8? If it does, why not add 3.8 to Travis's config? Or, maybe because of wemake-style-guide?

I can work on it if you think that we need this. Thanks.

[sobolevn]

Yeap, wps does not support 3.8 yet.

[sobolevn]

@lk-geimfari btw, what are your plans for this holiday season? Do you want to participate in WPS 0.14 release?

[lk-geimfari]

@sobolevn Previously I have tried to figure out how WPS works, but I'm not strong enough in ast things (I've never worked with it directly), but if there are easy issues to start I totally can work on it in holidays.

[sobolevn]

You can choose from level:started 👍

[lk-geimfari]

@sobolevn Great! I'll check issues out on holidays.

[Kub-AT]

As a third party library works fine with python 3.8.1

[sobolevn]

Turns out, this can be easily added. One sec.

[sobolevn]

Closed by #143

It is now officially supported: https://github.com/sobolevn/django-split-settings/blob/master/.travis.yml