Support for Sphinx>=4.0

[hoefling]

Right now, requires = ["sphinx ~= 3.0"] prevents from switching to Sphinx==4.0. Requesting broadening of the dependency range. I tested the version bump locally and see no degradation in build logs (no new warnings for 4.0) or kitchen sink. @pradyunsg what do you think?

[pradyunsg]

Sounds reasonable to me! I'll need to test locally, to make sure that things all work right.

[hoefling]

@pradyunsg thank you! If you need additional input, feel free to ping me; I have tried the bump out on our (quite extensive) internal docs, everything looks good so far with sphinx==4.0.1 and furo==2021.4.11b34 (latest releases).

[pradyunsg]

Done in beta 35! :)

[hoefling]

@pradyunsg awesome, thank you! 🚀

[pradyunsg]

WELL, there was one thing broken by the upgrade that I missed in the initial release: syntax highlighting in dark mode -- e49e5dd

[vberlier]

Any update? I love furo but right now it's the only thing keeping me from updating to Sphinx 4.

[pradyunsg]

Appreciate the nudge! :)

[josuemtzmo]

I love the theme, thanks for the great work! I was having the same issue using Sphinx 3.5.4, after updating to Sphinx 4.0.2 the issue was solved.