added v1.8.1 FIXES.md

Author: MartinPulec

FIXES.md

@@ -0,0 +1,11 @@
+#### 1.8.1
+
+* CI build fixes
+* fixed lavc QSV initialization fail
+* fixed AVFoundation device order instability
+* [Vulkan] fixed 16-bit RGB display
+* fixed GUI crash
+* double-framerate vo postprocess fixes
+* Vulkan is now enabled in Linux builds; macOS builds link with
+  MoltenVK, so that Vulkan works there as well
+