v6.0.0-beta.9

Fixed

• remove warnings in production, closes #1415
• EmptyPane: align text center
• components tree flashing
• component: edit comp with no setup, closes #1427
• switch to for...of, closes #1422
• autoscroll only when selected changes, closes #1429
• don't use localStorage, closes #1424
• check if event has bounds, closes #1398
• components: sort by position
• electron: no scrollbars, closes #1336

Improved

• timeline: disable screenshots if not supported
• components: support multi prop type, closes #1414