Release 5.3.0

[samuelreichor]

• Add CSP (Content Security Policy) compatibility
• Add autoInject setting to disable automatic injection of JS and CSS
• Add Twig variable craft.quickEdit.render() for manual template output
• Add optional nonce parameter craft.quickEdit.render(nonce) for CSP nonce support
• Add craft.quickEdit.js() and craft.quickEdit.css() for full control over output