Release 4.12.0 · xtermjs/xterm.js

🚀 Features

Double click to select a word will now use link providers registered via the API (#3230) via @marvinthepa
Support the ligatures addon with the DOM renderer (#3285) and WebGL renderer (#3286) via @Tyriar

Support async parser handlers (#3222, #3256, #3257, #3267) via @jerch. This enables for example custom parser handlers to defer heavy work to a worker thread. Note that this will block the terminal and you should generally stay away from this API unless it's a lot of work that would block the UI thread.
```
// Handle \x1b[<params>+Z using an asynchronous handler
terminal.parser.registerCsiHandler({intermediates:'+', final: 'Z'}, async params => {
  await new Promise(res => setTimeout(res, 50));
  return false;
});
```
Add onBell event API so embedders can handle the bell however they want (#3290, #3295) via @bmf-ribeiro
```
terminal.onBell(() => customBellImpl());
```

Emit onScroll events when the user is scrolling (#3205, #3313) via @schrej, @Tyriar
Fix an issue where some IMEs would not accept input (#3251) via @Python-37
Don't pad powerline glyph textures and improve vertical alignment (#3279) via @Tyriar
Test fixes (#3296) via @Tyriar
Fix exception when playing bell before open is called (#3314) via @jeanp413
Fix double click and drag up when selecting link provider word (#3318) via @meganrogge
Make sure all rows get refreshed when typing (#3332) via @Tyriar

Use RenderService.dimensions instead of CharSizeService for textarea position (#3169) via @kena0ki
Lint codebase using putout (#3269) via @coderaiser
Move scroll implementation to buffer service (#3277) via @meganrogge
Improve lint rules (#3282) via @Tyriar
Convert CharacterJoinerRegistry to a service (#3284) via @Tyriar
Improve diagnostics when polling tests time out (#3294) via @Tyriar
Start demo server before running integration tests (#3298) via @bmf-ribeiro
Enable Windows integration tests (#3299) via @bmf-ribeiro
Many improvements to readme (#3322) via @vladdoster
Improve tasks.json (#3327) via @Tyriar

Enable the use of ligatures outside of Electron by leveraging the navigator.fonts API (#3264) via @LabhanshAgrawal