Drop Node 4

Author: strugee

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-  - "4"
   - "6"
   - "7"
   - "8"

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 `git-clone-or-pull` follows [Semantic Versioning][1].
 
+## 4.0.0 - future
+
+### Breaking
+
+* Drop Node 4
+
 ## 3.1.1 - 2017-11-15
 
 ### Fixed

package.json

@@ -37,6 +37,6 @@
     "tmp": "0.0.33"
   },
   "engine": {
-    "node": ">=4.0"
+    "node": ">=6.0"
   }
 }