Use Leaflet 1.3.1

npm-shrinkwrap.json

@@ -1214,9 +1214,9 @@
       "resolved": "https://registry.npmjs.org/lcid/-/lcid-1.0.0.tgz"
     },
     "leaflet": {
-      "version": "1.2.0",
-      "from": "leaflet@1.2.0",
-      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.2.0.tgz"
+      "version": "1.3.1",
+      "from": "leaflet@1.3.1",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.3.1.tgz"
     },
     "lexical-scope": {
       "version": "1.2.0",

package.json

@@ -33,7 +33,7 @@
     "fastclick": "^1.0.6",
     "html-webpack-plugin": "^2.30.1",
     "jquery": "2.1.4",
-    "leaflet": "1.2.0",
+    "leaflet": "1.3.1",
     "moment": "2.18.1",
     "moment-timezone": "^0.5.13",
     "node-polyglot": "1.0.0",