refactor(bundle): remove d3-color via rollup alias

src/d3-color-alias.js

@@ -0,0 +1,10 @@
+// this helps us to reduce bundle size by ~10kb. d3-color is not used but can't be treeshaked in this case.
+
+const obj = {};
+export const rgb = {};
+export const color = {};
+export const hsl = {};
+export const lab = {};
+export const hcl = {};
+export const cubehelix = {};
+export default obj;