Itertools has finally embraced a faster n-ary `izip!()`


Released in itertools 0.7.0. The new feature exists thanks to @krdln in PR #212!

izip!() is now a wrapper for repeated regular .zip() and a single .map(). This means it optimizes as well as the standard library .zip() it uses.

See also Full changelog for 0.7.0, which is pretty short. I almost forgot — itertools is optionally no_std now too.