v0.13.0

What's Changed

• README: lead with the project name, move upgrade notes to UPGRADING.md by @compscidr in #642
• Home: stop clipping the site tags line at 355px by @compscidr in #643
• "Powered by goblog": link goblog.live, render from a shared partial, add a setting to hide it by @compscidr in #644
• Sitemap: real lastmod dates, no duplicates, no tag pages by @compscidr in #645
• Stop re-escaping post slugs on every save by @compscidr in #646

Full Changelog: v0.12.0...v0.13.0