makeList is generic instead of any

gist-charts/source/utility/makeList.method.ts

-export function makeList( x: any | Array<any> ): Array<any> {
-    let ret: Array<any>;
+export function makeList<T = any>( x: T | Array<T> ): Array<T> {
+    let ret: Array<T>;
     if ( x instanceof Array ) {
         ret = x;
     } else if ( x !== undefined ) {