Minimal set of methods for iterator methods proposal


Hey folks, I'm working on a proposal to add helpful methods like map to iterators. I would like to have a good set of methods for when this is brought to the committee asking for advancement.

If you've got ideas of what should or shouldn't be included in this proposal please feel free to comment on the issue or here. Keep in mind that more methods can be added in later proposals, but that is also a slow process.