1.5.0

Added

• The ability to have ports on groups.
• EXPERIMENTAL/INCOMPLETE Nested groups. Since GroupModel now inherits NodeModel, it became possible to have nested groups, but there are still problems with the order of links between groups.
• A Class parameter to GroupContainer.

Changed

• Only rerender groups when necessary.
• Receiving the same size from ResizeObserver doesn't trigger a rerender anymore.
• Avoid rerendering ports twice to update positions.
• Avoid rerendering ports when their parent node is moving.
• Padding is now handled in GroupModel instead of GroupContainer (UI). This is because the padding is necessary to have accurate size/position in the group model directly.

Fixed

• Use @key when rendering the list of groups. Not using it caused big/weird render times.
• Groups not showing in Navigator/Overview.