updated release notes

Author: AristurtleDev

.github/release-notes.txt

@@ -11,4 +11,7 @@
 - `AnimatedSprite.Update(double)` and `AnimatedTilemap.Update(double)` now expect the value being passed to be a representation of elapsed seconds and not elapsed milliseconds.  This is in-line with the common use case of delta time being representative of seconds elapsed and not milliseconds elapsed. (Closes #61)
 
 ## 4.0.5 Hotfix
-- `Slice.Origin` value is not set property in constructor. (Closes #64)
+- `Slice.Origin` value is not set property in constructor. (Closes #64)
+
+## 4.0.6 Hotfix
+- Removed package dependency on DesktopGL (Closes #66)