Update patch notes

Author: Pedro-Beirao

patch_notes/v0.29.md

@@ -1,5 +1,11 @@
+### v0.29.3
+- Fixed wrong save slot being deleted when quicksaving
+- Fixed a crash in Hexen
+- Fixed building dsda-doom.wad in big-endian hosts (FtZPetruska)
+- Improved statusbar color background algorithm (andrikpowell)
+
 ### v0.29.2
-- Fix crash with autosaves
+- Fixed crash with autosaves
 
 ### v0.29.1
 - Clickable demo progress bar