textwrap-0.8.0
The Wrapper stuct is now generic over the type of word splitter being used. This means less boxing and a nicer API. The Wrapper::word_splitter method has been removed. This is a breaking API change if you used the method to change the word splitter.
The Wrapper struct has two new methods that will wrap the input text lazily: Wrapper::wrap_iter and Wrapper::into_wrap_iter. Use those if you will be iterating over the wrapped lines one by one.