Paint.NET 3.20 RC1

* Note: New features will be displayed in English through the Alpha and Beta release(s). The final release will include full translations for the other supported languages.
* Fixed: If a floating tool window (Colors, History, Layers, Tools) was not docked/snapped, and the screen resolution was lowered or a Remote Desktop session was initiated, then the window would stay off screen and be "lost". It is now moved to keep it on-screen.
* Fixed: An issue for plugin developers where Effect`1.Render(3) was incorrectly throwing an exception when indirectly called through Effect.Render(6). This was preventing an updated version of the "Film Noir" plugin from working, even though its code was correct.
* Integrated updated translations for Spanish, French, Japanese, Korean, Portuguese (Brazil), and Chinese (Simplified). An updated German translation will be present in the final release.