Update readme for release 422.

Author: bolrog

README.md

@@ -2,7 +2,7 @@
 
 D2DX is a project for running classic Diablo II/LoD on modern PCs, with enhancements that honor the original look and feel. Play in a window or in fullscreen, glitch-free, with (or without) enhancements like widescreen and anti-aliasing.
 
-Version 0.99.419
+Version 0.99.422
 
 ## Mission statement
   - Turn the game into a well behaved DirectX 11 title on Windows 10 (7, 8 and 8.1 are also supported).
@@ -136,6 +136,11 @@ This project uses the following third party libraries:
 
 ## Release history
 
+### 0.99.422
+  - Fix missing stars in Arcane Sanctuary.
+  - Fix AA behind some transparent effects, e.g. character behind aura fx.
+  - Add -dxnocompatmodefix command line option (can be used in cases where other mods require XP compat mode).
+
 ### 0.99.419
   - Fix issue where "tooltip" didn't pop up immediately after placing an item in the inventory.
   - Add support for cfg file (named d2dx.cfg, should contain cmdline args including '-').