v0.9.0

What's Changed

• feat(diff): compare two builds and report which charts changed by @kannandreams in #153
• docs: add Slack community, automate the CLA, rewrite CONTRIBUTING by @kannandreams in #154
• refactor(render): one function per pipeline step, one entry per chart type by @kannandreams in #156
• docs(site): show the visual diff on the landing page, with real evidence by @kannandreams in #157
• docs(site): visual diff as a feature, a Support page, and a security policy by @kannandreams in #158
• docs(site): give the sidebar icons and groups, and rebuild the roadmap page by @kannandreams in #159
• fix(docs): colour HTML tag names in code blocks by @kannandreams in #161
• docs(site): make the documentation dark by default, with a switch by @kannandreams in #160
• fix(deps): patch qs, image-size and anyhow advisories by @kannandreams in #162
• docs: add NOTICE, trademark policy, and README attribution section by @kannandreams in #163
• fix(execution): accept a RecordBatchReader in QueryResult.from_arrow by @kannandreams in #164
• chore(release): 0.9.0 by @kannandreams in #165

Full Changelog: v0.8.0...v0.9.0