bump waterline-sequel version

Author: particlebanana

package.json

@@ -20,7 +20,7 @@
     "pg": "4.4.4",
     "waterline-cursor": "0.0.6",
     "waterline-errors": "0.10.1",
-    "waterline-sequel": "0.5.6"
+    "waterline-sequel": "0.5.7"
   },
   "devDependencies": {
     "captains-log": "0.11.11",