Bump when.js dep to 2.7

mikaelkaron · mikaelkaron · commit 7db7dfc4ccdb · 2013-12-16T12:22:48.000+08:00
diff --git a/bower.json b/bower.json
@@ -11,6 +11,6 @@
 		"troopjs-utils": "develop",
 		"jquery": "~2",
 		"poly": "~0.6",
-		"when": "~2.6"
+		"when": "~2.7"
 	}
 }
