ci(node-versions): dropped node versions that have reached EOL

BREAKING CHANGE: node versions that have reached EOL are no longer supported

Author: travi

.travis.yml

@@ -5,12 +5,6 @@ import:
   - traverson/.travis-ci:authenticated-semantic-release-stage.yml
 
 node_js:
-- '10.6.0'
-- '5'
-- '6'
-- '7'
-- '8'
-- '9'
-
-sudo: false
+- '10'
+- '12'
 

package.json

@@ -21,6 +21,9 @@
       "name": "Adam Szaraniec"
     }
   ],
+  "engines": {
+    "node": ">= 10"
+  },
   "license": "MIT",
   "scripts": {
     "test": "grunt",