Drop support for Node.js below 0.8

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-  - "0.6"
   - "0.8"
   - "0.10"
   - "0.12"
@@ -13,14 +12,12 @@ node_js:
   - "7.10"
   - "8.5"
 sudo: false
-dist: precise
 before_install:
   # Skip updating shrinkwrap / lock
   - "npm config set shrinkwrap false"
   # Remove all non-test dependencies
   - "npm rm --save-dev beautify-benchmark benchmark"
   # Setup Node.js version-specific dependencies
-  - "test $TRAVIS_NODE_VERSION != '0.6' || npm rm --save-dev istanbul"
   - "test $TRAVIS_NODE_VERSION != '0.8' || npm rm --save-dev istanbul"
   - "test $(echo $TRAVIS_NODE_VERSION | cut -d. -f1) -ge 4 || npm rm --save-dev $(grep -E '\"eslint\\S*\"' package.json | cut -d'\"' -f2)"
 script:

HISTORY.md

@@ -1,3 +1,8 @@
+unreleased
+==========
+
+  * Drop support for Node.js below 0.8
+
 0.5.2 / 2017-09-13
 ==================
 

package.json

@@ -34,7 +34,7 @@
     "index.js"
   ],
   "engines": {
-    "node": ">= 0.6"
+    "node": ">= 0.8"
   },
   "scripts": {
     "bench": "node benchmark/index.js",