Fix selection

Author: dy

package-lock.json

@@ -87,6 +87,7 @@
     "has-hover": "^1.0.1",
     "has-passive-events": "^1.0.0",
     "mapbox-gl": "0.44.1",
+    "math-log2": "^1.0.1",
     "matrix-camera-controller": "^2.1.3",
     "mouse-change": "^1.4.0",
     "mouse-event-offset": "^3.0.2",
@@ -95,7 +96,7 @@
     "ndarray-fill": "^1.0.2",
     "ndarray-homography": "^1.0.0",
     "ndarray-ops": "^1.2.2",
-    "point-cluster": "^3.1.1",
+    "point-cluster": "github:dfcreative/point-cluster",
     "polybooljs": "^1.2.0",
     "regl": "^1.3.1",
     "regl-error2d": "^2.0.3",