Made date/timestamps consistent and less shitty

src/structures/Role.js

@@ -72,12 +72,21 @@ class Role {
   }
 
   /**
-   * The time the role was created
+   * The timestamp the role was created at
+   * @type {number}
    * @readonly
-   * @type {Date}
    */
-  get creationDate() {
-    return new Date((this.id / 4194304) + 1420070400000);
+  get createdTimestamp() {
+    return (this.id / 4194304) + 1420070400000;
+  }
+
+  /**
+   * The time the role was created
+   * @type {Date}
+   * @readonly
+   */
+  get createdAt() {
+    return new Date(this.createdTimestamp);
   }
 
   /**