I love these proposals and while it probably makes sense for me to learn more about the languages that already implement it there's no denying that having them

I love these proposals and while it probably makes sense for me to learn more about the languages that already implement it there's no denying that having them in JS is a win. =) I wish I knew about python's [itertools](https://docs.python.org/3/library/itertools.html https://docs.python.org/3/library/itertools.html) before I started making [streaming-iterables](https://www.npmjs.com/package/streaming-iterables#api https://www.npmjs.com/package/streaming-iterables#api) for example.