[TASK] Upgrade packages & build tools

package.json

@@ -12,22 +12,22 @@
   "devDependencies": {
     "babel-eslint": "^10.0.1",
     "browser-sync": "^2.26.5",
-    "del": "^4.1.0",
-    "eslint": "^5.16.0",
+    "del": "^5.1.0",
+    "eslint": "^6.5.1",
     "eslint-config-airbnb-es5": "^1.2.0",
     "eslint-config-defaults": "^9.0.0",
     "eslint-plugin-react": "^7.12.4",
     "gulp": "^4.0.1",
-    "gulp-autoprefixer": "^6.1.0",
+    "gulp-autoprefixer": "^7.0.1",
     "gulp-cache-bust": "^1.4.0",
     "gulp-cli": "^2.2.0",
     "gulp-environments": "^0.1.2",
-    "gulp-eslint": "^5.0.0",
+    "gulp-eslint": "^6.0.0",
     "gulp-htmlmin": "^5.0.1",
     "gulp-inject": "^5.0.2",
     "gulp-inline-source": "^4.0.0",
     "gulp-jsonminify": "^1.1.0",
-    "gulp-load-plugins": "^1.5.0",
+    "gulp-load-plugins": "^2.0.1",
     "gulp-real-favicon": "^0.3.2",
     "gulp-requirejs-optimize": "^1.3.0",
     "gulp-sass": "^4.0.2",
@@ -45,15 +45,15 @@
   },
   "dependencies": {
     "almond": "^0.3.3",
-    "d3-drag": "^1.2.3",
+    "d3-drag": "^1.2.4",
     "d3-force": "^1.2.1",
     "d3-selection": "^1.4.0",
-    "d3-zoom": "^1.7.3",
-    "leaflet": "^1.4.0",
+    "d3-zoom": "^1.8.3",
+    "leaflet": "^1.5.1",
     "moment": "^2.24.0",
     "navigo": "^7.1.2",
     "node-polyglot": "2.2.2",
-    "promise-polyfill": "^8.1.0",
+    "promise-polyfill": "^8.1.3",
     "rbush": "^3.0.1",
     "requirejs": "^2.3.6",
     "snabbdom": "^0.7.3"