Make "list" from the Random library use loops

[TheSeamau5]

I opened an issue on elm-random-extra: TheSeamau5/elm-random-extra#1

where I spotted that I'm unable to generate lists larger that 3999 elements long (at least on my computer: macbook pro from 2011).

This is due to how list is implemented. It's a recursive definition. This issue goes towards the larger goal of solving tail recursion in Elm, but I wanted to point out this example as I have found it.

[jvoigtlaender]

In the current version of core, Random.list is implemented in tail recursive fashion. And the current compiler version optimizes tail recursion. So this should not be an issue anymore.

[jvoigtlaender]

In the current version of core, Random.list is implemented in tail recursive fashion. And the current compiler version optimizes tail recursion. So this should not be an issue anymore.