I just released version 2.4.0
Updated to Qt 5.15.2.
Added Manhwa mode: Adds vertical touch scrolling for very long pages like in Manhwas. Can be enabled in the settings.
Added support for proxies.
Fixed Mangapana.
Fixed several bugs.
You can find it, as always, here:
https://github.com/Rain92/UltimateMangaReader/releases