Merge branch 'master' into u/jasonmit/fix-node-6

Author: analog-nico

.travis.yml

@@ -11,6 +11,10 @@ matrix:
     env: V_REQUEST=latest
   - node_js: "6"
     env: V_REQUEST=latest
+  - node_js: "8"
+    env: V_REQUEST=latest
+  - node_js: "10"
+    env: V_REQUEST=latest
 
 before_install:
   - npm install tough-cookie

package.json

@@ -35,7 +35,7 @@
   "dependencies": {
     "request-promise-core": "1.1.1",
     "stealthy-require": "^1.1.1",
-    "tough-cookie": "^2.5.0"
+    "tough-cookie": "~2.3.3"
   },
   "peerDependencies": {
     "request": "^2.34"