v5.3.0-alpha.18

Bug Fixes

• CSF: Warn when CSF and storiesOf mixed in one file (#8411)
• Addon API: Clean preview hooks when removing a story (#8408)
• Addon-docs: Fix typo in default config (#8403)
• Angular: Fix angular2-template-loader / raw-loader version conflicts (#8269)
• CLI: Update button.svelte template (#8369)

Maintenance

• Official-storybook: Add a story with duplicate decorators (#8407)