require sphinxcontrib-jquery >=4.0

[chris48s]

4d6de11 adds an import to a function which only exists in sphinxcontrib-jquery>=4.0

Upgrading from sphinx-rtd-theme==1.2.0 to sphinx-rtd-theme==1.2.1 with sphinxcontrib-jquery==2.0.0 already in your lockfile or virtualenv causes ImportError: cannot import name 'add_js_files' from 'sphinxcontrib.jquery' to be thrown.

This PR pins sphinxcontrib-jquery to a compatible range.

[benjaoming]

Thanks @chris48s

This was also in #1446

I agree that it should be merged 👍

[chris48s]

Apologies for the duplicate. Feel free to just close this if you prefer to merge the other one.

[benjaoming]

Oh it's me who's thankful 🙏 It's very nice that you've illustrated the issue about lock files and motivated to get this change in 👍

[benjaoming]

@chris48s implementing this change in #1446 - it might not get out until 1.3.0, it implies to drop Sphinx 1.7 support, so just need to make that noted somewhere (there's this unknown pile of very old documentation projects that are still being built)