Equinox v0.2.0

First release using GitHub releases. We'll be using this to serve as a changelog.

This bumps the minor version 0.1.6 -> 0.2.0 so this is a breaking release. (Admittedly for something pretty minor. See the autogenerated changelog below.)

What's Changed

• Fixed filter_grad(has_aux=True) returning arguments in the wrong order. by @patrick-kidger in #36

Full Changelog: v0.1.6...v0.2.0