chore(package): update typedoc to version 0.12.0 (#90)

Author: greenkeeper[bot]

package.json

@@ -47,7 +47,7 @@
     "ts-jest": "^23.0.0",
     "tslint": "^5.10.0",
     "tsutils": "^3.0.0",
-    "typedoc": "^0.11.1"
+    "typedoc": "^0.12.0"
   },
   "dependencies": {
     "lodash": "^4.17.10",