Add "die()" as an option to exit a function with return typ "never"

[ShadyMedic]

There was only the exit() function mentioned.

[cmb69]

Hmm, according to the docs:

This language construct is equivalent to exit().

IMO, there is no need to explicitly mention die() here.

[ShadyMedic]

Yeah, I know it's a function/construct with the same output, but at the same time, it's also another way to stop the execution of the script. I think it should be listed to not raise doubts about whether are these two functions really the same.

[Girgias]

I'm not really a fan of this, die is akin to an alias of exit.

[kamil-tekiela]

That's unnecessary. If you really insist then something like exit/die would look better, but since it's the exact same language construct, I don't think it's needed at all.

[afilina]

Since there is no interest in listing the alias, should this PR be closed?

[cmb69]

Yeah, this PR should be closed. Nonetheless, thanks for working on this, @ShadyMedic!