A variant of zip that can handle a shorter/optional second iterator.
Given (0..10).zip(0..5), zip would stop after the shorter iterator 0..5 ends.
(0..10).try_zip(Some(0..5)), however, will continue, using None for the second value of the tuple. (The tuple returned by TryZip is of the type (A::Item, Option<B::Item>))
This crate was written for easily parsing IRC join messages.