@wingscms/react@0.15.0

Content:
Switched to react renderer:

• fixes hot-reloading in development due to no multiple render trees 🙌
• content can now be scraped by bots that don't support JS
• no initial flash of content due to double render pass
• better performance for slow devices due to the JS bundle not having to be parsed/compiled/run before content can be rendered
• scroll position can now be preserved (by Gatsby, for example)
• removes the JS requirement to read the content