Well, after a year later, I finally updated the addon:
- One problem that bothered me is that if you disconnected from the game while crouching you would get stuck crouched, until you typed in "-duck" console command. But now it's fixed.
- I also removed the feature where your crouch speed would decrease, because if you used an addon such as "Stopping Power - Damage slows you down" (https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2420243570) you would not be able to move at all, because of how slow you became.