Update dependencies.

package.json

@@ -48,14 +48,14 @@
     "d3-color": "1.0.2",
     "d3-dispatch": "1.0.2",
     "d3-drag": "1.0.3",
-    "d3-dsv": "1.0.3",
+    "d3-dsv": "1.0.4",
     "d3-ease": "1.0.2",
     "d3-force": "1.0.5",
     "d3-format": "1.1.0",
-    "d3-geo": "1.6.0",
+    "d3-geo": "1.6.1",
     "d3-hierarchy": "1.1.2",
     "d3-interpolate": "1.1.3",
-    "d3-path": "1.0.3",
+    "d3-path": "1.0.4",
     "d3-polygon": "1.0.2",
     "d3-quadtree": "1.0.2",
     "d3-queue": "3.0.4",