Merge pull request #78 from kaitlyndlee/zoom

   * @param {String} name - Name of Projection.

   *

   * @param {List} center - Center of map based off of projection.

]   */

   */

  changeProjection: function(name, center) {

    // Reset the view before changing the projection since

    // an exception may be thrown when swapping to a polar

    // projection and the zoom level is 7+.

    this.setView(center, 1, true);

    let newCRS = null;

    if (name == "cylindrical") {

      newCRS = this._defaultProj;

      this._currentProj = "EPSG:4326";

      this.setMaxZoom(8);

    } else {

      let proj = this._astroProj.getStringAndCode(this._target, name);

      newCRS = new L.Proj.CRS(proj["code"], proj["string"], {

        resolutions: [8192, 4096, 2048, 1024, 512, 256, 128]

      });

      this._currentProj = proj["code"];

      this.setMaxZoom(6);

    }

    this.options.crs = newCRS;

    // Reset the view again because the map refreshses after changing

    // the projection and you start to zoom in/out. This makes the map do a

    // weird flashing transition.

    this.setView(center, 1, true);

    this.loadLayerCollection(name);