Remove switch case fallthrough

[Mike Parker]

On Friday, 14 May 2021 at 06:21:10 UTC, rempas wrote:
>
>
> Yeah but we have to add "break" every time? No ones uses this 
> feature anymore (thus the warnings) because we can add more 
> cases. This is what I mean by saying "doing things just to do 
> them". While I agree that code that looks like C should act 
> like C but I think we can make one exception here! But anyway 
> just my opinion

But C supports implicit fallthrough, so by deprecating it, we did 
make an exception. Ans it's a good exception to make.