Update changelog for #395 (#396)

Author: mkeeter

CHANGELOG.md

@@ -1,3 +1,7 @@
+# 0.4.3 (unpublished)
+- Fixed bug in x86 interval `OR` function ([#395](https://github.com/mkeeter/fidget/pull/395)),
+  thanks [@Wulfsta](https://github.com/Wulfsta)
+
 # 0.4.2
 - Change `depth` member in `GeometryPixel` from `u32` to `f32` ([#381](https://github.com/mkeeter/fidget/pull/381))
 - Fixed memory corruption in a subset of x86 interval JIT functions, revealed