Bump typedoc from 0.17.8 to 0.18.0

Bumps [typedoc](https://github.com/TypeStrong/TypeDoc) from 0.17.8 to 0.18.0.
- [Release notes](https://github.com/TypeStrong/TypeDoc/releases)
- [Commits](TypeStrong/typedoc@0.17.8...v0.18.0)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -122,7 +122,7 @@
     "tslint": "^6.0.0",
     "tslint-config-prettier": "^1.15.0",
     "tslint-config-standard": "^9.0.0",
-    "typedoc": "^0.17.0",
+    "typedoc": "^0.18.0",
     "typescript": "^3.0.3"
   },
   "husky": {