revamp weather UI: cards, meteograms, units in header, location favorites and range controls

src/lib/charts/index.ts

@@ -5,7 +5,7 @@
  *   import { CanvasChart, buildDaylightBands, SERIES_COLORS } from '$lib/charts';
  */
 
-export { default as CanvasChart } from './CanvasChart.svelte';
+export { default as CanvasChart, setGroupHover, groupRange } from './CanvasChart.svelte';
 export type { ChartSeries } from './CanvasChart.svelte';
 
 export { buildDaylightBands } from './bands';