deps: upgrade & fix vulnerabilities (#37)

* deps: upgrade & fix vulnerabilities

* fixup!

* deps: upgrade webpack-dev-server

Author: ZYSzys

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
-node_js: 
-  - "9"
+node_js:
+  - "10"
 install:
   - npm install
 script:
-  - npm run build
+  - npm run build

dist/vue-canvas-nest.min.js

@@ -21,7 +21,7 @@
     "canvas-nest.js": "2.0.3"
   },
   "peerDependencies": {
-    "vue": "^2.x"
+    "vue": "^2.5.x"
   },
   "browserslist": [
     "> 1%",
@@ -41,7 +41,7 @@
     "vue-router": "3.0.1",
     "vue-template-compiler": "2.5.17",
     "webpack": "3.12.0",
-    "webpack-dev-server": "2.11.2"
+    "webpack-dev-server": "2.11.5"
   },
   "repository": {
     "type": "git",