Tagging it 1.0.0

This is one of my oldest shards, and has been in use across many other projects for a considerable amount of time.

I have bumped it to 1.0.0 and performed a little cleanup of internals. There is one potentially significant change between 0.4.0 and 1.0.0. When I originally built this package, I arranged the representation in such a way that, while the objects themselves were sortable, the string representation was not. It has been revised so that the string representation is now itself sortable, as well.