Time to move std.experimental.checkedint to std.checkedint ?

[Berni44]

On Tuesday, 23 March 2021 at 21:22:18 UTC, Walter Bright wrote:
> It's been there long enough.

Isn't that true meanwhile for everything in std.experimental? I 
ask, because I've got the feeling, that std.experimental doesn't 
work as expected. For me it looks more or less like an attic, 
where stuff is put and then forgotten. Maybe the way we used for 
sumtype is the better approach...