chore(charts): changeset

Author: stephl3

.changeset/chart-group-tooltip-sync.md

@@ -0,0 +1,40 @@
+---
+'@lg-charts/core': major
+---
+
+#### Breaking Changes
+
+- Replaced `groupId`/`enableGroupTooltipSync` props on `Chart` component with new `ChartGroup` component. This fixes an existing `ChartTooltip` bug: when unhovering a grouped chart instance with synced tooltips, tooltips continued to render.
+
+#### Migration Guide
+
+##### Grouped charts
+
+```diff
++ import { ChartGroup } from '@lg-charts/core';
+
+- <Chart groupId="group1" enableGroupTooltipSync>
+-   <ChartTooltip />
+-   <Line ... />
+- </Chart>
+- <Chart groupId="group1" enableGroupTooltipSync>
+-   <ChartTooltip />
+-   <Line ... />
+- </Chart>
+
++  // unstyled container, use className (recommended) or wrap existing container
++ <ChartGroup groupId="group1" enableTooltipSync>
++   <Chart>
++     <ChartTooltip />
++     <Line ... />
++   </Chart>
++   <Chart>
++     <ChartTooltip />
++     <Line ... />
++   </Chart>
++ </ChartGroup>
+```
+
+##### Ungrouped charts
+
+No changes required. `Chart` without a `ChartGroup` container continues to work as before.