ESL v4.11.0

The ESL v4.11.0 has been released. The latest version brings the following updates:

• ESLPanelGroup now supports close state and provides correct animation for it
• New marker attribute for ESLPanelGroup: has-opened that indicates that the panel group has open panels inside
• Technical improvement for isElement checks across the library (ESL stable to DOM manipulation between different window contexts, e.g. iframes)
• New utility methods: isElement and isPlainObject