[issue17460] Remove the strict and related params completely removing the 0.9 support

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

> 2. Making the rest of the arguments as keyword only arguments in order to
> prevent people doing mistakes. I am okay with this, people upgrading from
> 3.3, will face a problem if they already dont have a keyword only
> argument.

I thought about how to leave the parameter and imlicitly raise an exception, 
but your variant #2 is better. It is fully backward compatible and allows us 
to avoid the subtle error.

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