update changelog

Author: haschek

CHANGELOG.md

@@ -19,6 +19,18 @@ This is a major release, and it might be not compatible with your current usage
     -   the `data` object provides `markerAppearance` to set and remove the edge arrows
 -   `<EdgeNew />`
     -   component for React Flow v12, displaying new connection lines
+-   new color palette that includes 4 sections with 20+ color tints in 5 weights each
+    -   indentity, semantic, layout, extra
+    -   managed via CSS custom properties
+    -   see `README.md` for inf about usage
+-   SCSS color functions
+    -   `eccgui-color-var`: returns a var of a custom property used for palette color
+    -   `eccgui-color-mix`: mix 2 colors in `srgb`, works with all types of color values and CSS custom properties
+    -   `eccgui-color-rgba`: like `rgba()` but it works also for CSS custom properties
+-   `colorCalculateDistance()`
+    -   function to calculate the difference between 2 colors using the simple CIE76 formula
+-   `textToColorHash()`
+    -   function to calculate a color from a text string
 
 ### Removed
 
@@ -35,12 +47,16 @@ This is a major release, and it might be not compatible with your current usage
     -   support now v9 and v12 of react flow
 -   `<ReactFlowExtended />`
     -   use `<EdgeNew />` by default for new connection lines, you can overwrite it by setting `connectionLineComponent` to `undefined`
+-   overrite the native SCSS `rgba()` function, so it now works for SCSS color values and CSS custom properties
+-   `getColorConfiguration()` works with CSS custom properties
 
 ### Deprecated
 
 -   support for React Flow v9 will be removed in v26
 -   `<EdgeDefs />`
     -   use `<ReactFlowMarkers />` or build it on single `<ReactFlowMarker />`
+-   property names returned by `getCOlorConfiguration` were changed to kebab case because they are originally defined via CSS custom properties
+    -   e.g. `graphNode` is now `eccgui-graph-node` and `graphNodeBright` is `eccgui-graph-node-bright`
 
 ## [24.4.1] - 2025-08-25