Remove switch case fallthrough

[IGotD-]

On Thursday, 13 May 2021 at 14:15:39 UTC, Paul Backus wrote:
>
> switch case fallthrough is already considered deprecated. If 
> you use it, the compiler will produce the following warning:
>
>     Deprecation: switch case fallthrough - use 'goto case;' if 
> intended
>

I kind of read between the lines and got it to that TS wanted to 
remove the mandatory break completely. Could be wrong though.