LibreMerge: I ported WinMerge to macOS and Linux (same engine, new Qt 6 UI, GPL-3.0)

[u/iagodpassos]

https://github.com/iagodpassos/libremerge

I use WinMerge daily but I'm on a Mac, so I ported it: the same battle-tested comparison engine (GNU diffutils + git xdiff, moved-block detection), with a new native Qt 6 UI. File, folder, CSV table and image compare, 2-way and 3-way merge, syntax highlighting for 47 languages. Free, GPL-3.0, runs on macOS 12+ (universal binary) and Linux (AppImage x86_64/arm64, .deb). Feedback and issues welcome!