Replace remaining non-TCO implementations

[lue-bird]

Replaces the remaining few functions not qualifying for TCO using List.foldr since they were all following the shape

recursive list =
    case list of
        ...
        x :: xs -> ... recursive xs

The resulting implementations will be slightly slower but stack safe, similar to #89.
Also includes small doc comment example fixes.

[miniBill]

I'll take slightly slower over not stack safe every time. We can make them faster after they're safe