docs(changelog): Improve changelog - previous changelogs:

March 22, 2016

* Fixes non-unique IDs on section headers.
* You can now run `npm run build` multiple times without any problems.

March 17, 2016

* Support for linking to specific languages. URLs were previously like
  `#the-section` but now are `?language=JavaScript#the-section` when a language
  is selected, so that you can link to both a specific section and a specific
  language.
* Changes how Docbox uses highlight.js - instead of including tons and tons
  of languages, we include only a few.

March 14, 2016

* Support for toggling between 1 and 2 column mode

package.json

@@ -48,15 +48,22 @@
     "remark": "^5.0.1",
     "remark-html": "^5.0.0",
     "remark-slug": "^4.1.0",
+    "standard-changelog": "^0.0.1",
     "unist-util-select": "^1.3.0",
     "unist-util-visit": "^1.0.0"
   },
   "devDependencies": {
     "babel-register": "^6.3.13",
+    "budo": "^8.2.2",
+    "cz-conventional-changelog": "1.2.0",
     "expect": "^1.13.4",
     "mocha": "^2.3.4",
     "to-vfile": "^1.0.0",
-    "budo": "^8.2.2",
     "uglifyjs": "^2.4.10"
+  },
+  "config": {
+    "commitizen": {
+      "path": "./node_modules/cz-conventional-changelog"
+    }
   }
 }