chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeperio-bot

yarn.lock

@@ -2,13 +2,13 @@
 # yarn lockfile v1
 
 
-"@robotlegsjs/core@^0.0.3":
-  version "0.0.3"
-  resolved "https://registry.npmjs.org/@robotlegsjs/core/-/core-0.0.3.tgz#20a54bea309560e1c0c0655e3eee96d03f183fa5"
+"@robotlegsjs/core@0.0.4":
+  version "0.0.4"
+  resolved "https://registry.npmjs.org/@robotlegsjs/core/-/core-0.0.4.tgz#746ac62e7117a70d3ba89cecaeb2e41506688163"
   dependencies:
     inversify "^4.3.0"
 
-"@robotlegsjs/signals@0.0.7":
+"@robotlegsjs/signals@^0.0.7":
   version "0.0.7"
   resolved "https://registry.npmjs.org/@robotlegsjs/signals/-/signals-0.0.7.tgz#8f1d52904179edb415591eca9c841acd2bc67acc"