@Raszpl Release Nr.4

Please read the previous notes: https://github.com/code-charity/youtube/releases about many extentions going extinct now! Etc.

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New Contributors! : @gabrielhsdev #2336 @agrpranjal07 #2303

Thanks for keeping up the good work!

( Chrome webstore seems to understand better lately. ( Also thanks to who suggested to make youtu.be/SLfff7Kw_Xc&t=18s ))

• Update init.js ImprovedTube.livechat collapsed called too early by @raszpl in #2298
• Update player.js playerQualityWithoutFocus breaks on switching tabs by @raszpl in #2299
• Rotate shortcut updated by @agrpranjal07 in #2303
• Update styles.css Shorts Background by @raszpl in #2322
• Update bug_report.md less is more by @raszpl in #2323
• #2111 by @gabrielhsdev in #2336
• Add Jest Framework, JSLint, and Testing Workflow by @PTheocharis in #2345
• Update player.js fix channel_trailer_autoplay by @raszpl in #2349
• Update themes.js cleanup by @raszpl in #2325
• Update init.js removing only one instance playing kludge by @raszpl in #2356
• Update manifest.json unify formatting by @raszpl in #2365
• Update satus.js fix shortcut reset by @raszpl in #2355
• Update background.js dead code parse error fix, formatting by @raszpl in #2370
• Update manifest.json forgot comma by @raszpl in #2369
• Update header.css Firefox logo fix by @raszpl in #2374
• Update background.js keep focus/blur messaging to minimum by @raszpl in #2375
• Update player.js commenting out until feature is finished by @raszpl in #2377
• Update background.js fixing last patch by @raszpl in #2380
• playerControls() multiple problems by @raszpl in #2382
• Update player.js ClipboardItem (supported in the latest firefox too) by @raszpl in #2373
• Update player.js reverting #2062, fixes #1342 #1652 #1904 by @raszpl in #2389
• Update general.js disableThumbnailPlayback search page fix by @raszpl in #2383
• Captions rename for live updating, add option to force disable by @raszpl in #2385
• Update functions.js ignore video previews by @raszpl in #2384
• playlist.js undefined 'playlistData' proper fix, even safer by @raszpl in #2387
• fix playerAutopauseWhenSwitchingTabs when minimizing browser by @raszpl in #2386

Full Changelog: v4.938...v4.1001

(some big changes. please test?)
All the best greetings to @code-charity/contributors @code-charity/translators @code-charity/developers