Partial changelog update for 1.3

CHANGELOG.md

@@ -8,12 +8,23 @@ For similar reasons, and because some features are vastly more complex than othe
 ## SuperTuxKart 1.3
 ### Networking
 * Server bookmarks by Benau
+
+### Graphics
+* Introduce render resolution scaling for the modern renderer, by QwertyChouskie and Deve. For users with limited GPU power, this allows to get significant performance (FPS) gains at the cost of image quality. It can also allow additional graphics effects to be enabled at the same performance. This is especially useful for users with high-resolution and high-DPI screens. The scaling only affects the 3D scene, the UI remains crisp at full-resolution.
+
 ### General
 * Switch port by Mary
 * Gamepad force feedback support by Mary
 * Highscore screen by RQWorldblender
 * Improved screen space reflection by QwertyChouskie
 * Render resolution changing by Deve and QwertyChouskie
+* Updates to the bundled tinygettext library, by Benau
+* And bugfixes and enhancements too small to be detailed
+
+### User Interface
+* Display the skin-appropriate iconset without having to restart, by Benau
+* Fix some issues with the options menu when used during a pause, by Benau
+
 ### Tracks and modeling
 * Alien Signal by Samuncle
 * Ancient Colosseum Labyrinth by Typhon306