v0.6.0

What's Changed

• Document the public explicit step and qualify higher-order AD by @jc-macdonald in #201
• Replay adaptive meshes with namespace-dispatched scans by @jc-macdonald in #202
• Prepare op_engine 0.6.0 release by @jc-macdonald in #203

Full Changelog: v0.5.0...v0.6.0