v0.6.0: Metric System

What's Changed

• Reorganize docs sidebar navigation by @jlowin in #142
• Add /marvin comment workflows for issues and PRs by @jlowin in #143
• Clean up action types and fix renderer issues by @jlowin in #145
• Move charts and control flow to dedicated submodules by @jlowin in #146
• Add Metric, ScatterChart, Histogram, and range slider by @jlowin in #148
• Add installation guide and versioning policy by @jlowin in #147

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