add static method to clear all data

This creates a temporary fix for issues using split type with
react.

lib/Data.js

@@ -66,6 +66,15 @@ export function remove(element) {
   }
 }
 
+/**
+ * Clear all cached data
+ */
+export function clear() {
+  Object.keys(cache).forEach((key) => {
+    delete cache[key]
+  })
+}
+
 /**
  * Remove all temporary data from the store.
  */

lib/SplitType.js

@@ -18,6 +18,13 @@ export default class SplitType {
     return data.cache
   }
 
+  /**
+   * CLears all data
+   */
+  static clearData() {
+    data.clear()
+  }
+
   /**
    * The default settings for all splitType instances
    * @static

lib/index.d.ts

@@ -47,6 +47,16 @@ declare module 'split-type' {
      */
     chars: HTMLElement[] | null
 
+    /**
+     * Returns the data store object. This is mainly for debugging purposes. 
+     * 
+     */
+    static data: any
+
+    /**
+     * Removes all data from the cache. 
+     */
+    static clearData (): void 
     /**
      * Get the default settings for all SplitType calls, or set new ones.
      *