chore: require bson 1.1.4 or higher

Author: mbroadst

package.json

@@ -25,7 +25,7 @@
   },
   "dependencies": {
     "bl": "^2.2.0",
-    "bson": "^1.1.1",
+    "bson": "^1.1.4",
     "denque": "^1.4.1",
     "require_optional": "^1.0.1",
     "safe-buffer": "^5.1.2"