Support comparisons between types

[fgallegosalido]

It would be really nice to have the ability to do something like this:

if (all_of{a, b, c} < any_of{100, 200}) {//...}

Obviusly, the same for the rest of the options the library provides. I don't reallty know how difficult it would be to implement it, but I find it a really nice feature.