A smol dark theme for crates.io.

NOTE: crates.io now mangles class/id names, which unfortunately sort of thwarts the ability to apply a usercss. Until my PR to the crates.io repo gets merged, I will try to keep this usercss working but I cannot give any guarantees.

Install Stylus and then use Stylus to install the crates-io-dark usercss.

crates-io-dark is licensed to anyone under the terms of the Creative Commons Attribution-ShareAlike license, version 4.0 (or any higher version, at your option). For the relevant legal text, see https://creativecommons.org/licenses/by-sa/4.0/legalcode, or the LICENSE file for a plaintext version.