Use version 0.1.0

From Campfire:

> **Greg S.**: My official opinion v2, I think we should merge the PRs we have now and then release as 0.1.0 rather than 1.0.0. I think we want to have the API nailed before we call it 1.0.0 since an API change at that point would require going to 2.*.
That will let us start playing with it and testing out some of these use case ideas.

> **Chris T.:** :+1:

> **Jason R.:** :+1: for v0.1.0

This ignores the problem of manually having to bump version numbers.