1.完善坐标转换功能,2.添加气泡窗口自定容器

src/core/transform/Transform.js

    */
   static transformCartesianToWGS84(cartesian) {
     if (cartesian) {
-      let ellipsoid = Cesium.Ellipsoid.WGS84
-      let cartographic = ellipsoid.cartesianToCartographic(cartesian)
+      let cartographic = Cesium.Cartographic.fromCartesian(cartesian)
       return new Position(
         Cesium.Math.toDegrees(cartographic.longitude),
         Cesium.Math.toDegrees(cartographic.latitude),

src/core/widget/Popup.js

     DomUtil.setClass(this._wrapper, `dc-popup ${this._config.customClass}`)
   }
 
+  /**
+   * Setting custom wrapper
+   * @param wrapper
+   * @returns {Popup}
+   */
+  setCustomWrapper(wrapper) {
+    if (wrapper && wrapper instanceof Element) {
+      this._wrapper = wrapper
+    }
+    return this
+  }
+
   /**
    *
    * Setting widget position