Update BREAKING.md

Signed-off-by: Lilis Iskandar <[email protected]>

Author: veeableful

BREAKING.md

@@ -25,6 +25,7 @@
 + Renamed `Id` to `ID` in `Finger` struct
 + Renamed `SW_YUVTexture` to `SWYUVTexture`
 + Moved error to the last return value in `ShowMessageBox()`
++ Change Mutex, Sem, Cond to have methods instead of functions
 
 - Unexported `Padding` in `AudioSpec` struct
 - Unexported `goHintCallback`