1.38.4

[Commits to master since this release](https://github.com/gorhill/uBlock/compare/1.38.4...master)
[Commits since last release](https://github.com/gorhill/uBlock/compare/1.38.2...1.38.4)

To install the stable build:

- **Firefox**: Click [uBlock0_1.38.4.firefox.signed.xpi](https://addons.mozilla.org/firefox/downloads/file/3852058/ublock_origin-1.38.4-an+fx.xpi)
    - [uBO works best on Firefox](https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox).
- **Chromium**: Install from the Chrome store (CWS): <https://chrome.google.com/webstore/detail/ublock-origin/cjpalhdlnbpafiamejdnhcphjbkeiagm>
- **Edge**: Install from Microsoft Store: <https://microsoftedge.microsoft.com/addons/detail/odfafepnkmbhccpbejgmiehpchacaeak>
    - The Microsoft Store version of uBO is published by [Nik Rolls](https://github.com/nikrolls/uBlock-Edge)
- **Opera**: Install from Opera addons: <https://addons.opera.com/en/extensions/details/ublock/>

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## Notable commits without an entry in the issue tracker

- [Update twitch-videoad scriptlet](https://github.com/gorhill/uBlock/commit/0d3a1932e998c0cb3f4c5ff1d9a3fe62e12a3cf4) (solution contibuted by @pixeltris)