Merge pull request #853 from unexpectedjs/depfu/update/npm/ukkonen-2.1.0

Upgrade ukkonen to version 2.1.0

Author: sunesimonsen

package.json

@@ -29,7 +29,7 @@
     "diff": "^5.0.0",
     "greedy-interval-packer": "1.2.0",
     "magicpen": "^6.2.4",
-    "ukkonen": "^1.4.0",
+    "ukkonen": "^2.1.0",
     "unexpected-bluebird": "2.9.34-longstack2"
   },
   "devDependencies": {