- feat: add several new convenient fn to `DataType` - feat: add a `Range::range` fn to get subranges - feat: add a new `Range::cells` iterator - feat: impl DoubleEndedIterator when possible - perf: add some missing `size_hint` impl in iterators - feat: add a `Range::get` fn (similar to slice's) - perf: add some `ExactSizeIterator`