v5.3.0

Storybook 5.3 is here!

• 📣 Release post

Key features:

• 📝 Custom documentation in MDX
• 🎨 Multi-framework SB Docs (React, Vue, Angular, WC, Ember)
• 📦 Web-components framework support
• 🔼 Main.js declarative configuration

5.3 contains hundreds more fixes, features, and tweaks. Browse the changelogs matching 5.3.0-alpha.*, 5.3.0-beta.*, and 5.3.0-rc.* for the full list of changes. See MIGRATION.md to upgrade from 5.0 or earlier.