Diff: https://github.com/xtermjs/xterm.js/compare/96eafd3...c55e938

Changes:

- WebGL PR merged
- wordSeparator option
- Layering refactors
- Benchmark merged in
- declarationMap
- tslint clean
- Lower z-indexes (already fixed in vscode)
- Guard against floats in API
- Reset isWrapped on windows
- Centered scroll
- Fix selecting half of double width chars

Fixes #50623
Fixes #76526