Drop node 0.10 and 0.12 and added node 9 matrix testing

Author: anthony-redFox

.travis.yml

@@ -3,11 +3,10 @@ cache:
   directories:
     - travis-phantomjs
 node_js:
+  - "9"
   - "8"
   - "6"
   - "4"
-  # - "0.12"
-  # - "0.10"
 before_install:
   # from https://github.com/travis-ci/travis-ci/issues/3225#issuecomment-177592725
   # and also from https://github.com/travis-ci/travis-ci/issues/3225#issuecomment-200965782

appveyor.yml

@@ -1,11 +1,10 @@
 # Test against these versions of Node.js.
 environment:
   matrix:
-    # - nodejs_version: "0.10"
-    # - nodejs_version: "0.12"
     - nodejs_version: "4"
     - nodejs_version: "6"
     - nodejs_version: "8"
+    - nodejs_version: "9"
 
 # Install scripts. (runs after repo cloning)
 install:

package.json

@@ -34,7 +34,7 @@
   },
   "browser": "./dist/less.js",
   "engines": {
-    "node": ">=0.12"
+    "node": ">=4"
   },
   "scripts": {
     "test": "grunt test"