v6.0.0-beta.10

The devtools frontend is now almost entirely migrated to Typescript 🔥

New

• header: new Inspector/Timeline switch ('Plugins' moved to the 'more' menu on the right)
• timeline: selectable layers
• api: scope plugin hooks to associated app by default (disable with disableAppScope in plugin setup)
• api: add app to payload to hooks
• api: edit custom component fields

Fixed

• improved dark theme border colors
• other small fixes (thanks Typescript!)

Maintenance

• Migrated the frontend to Typescript
• Upgraded to ESLint 7