Update bignumber.js to 4.1.0

Author: dougwilson

Changes.md

@@ -4,6 +4,10 @@ This file is a manually maintained list of changes for each release. Feel free
 to add your changes here when sending pull requests. Also send corrections if
 you spot any mistakes.
 
+## HEAD
+
+* Update `bignumber.js` to 4.1.0
+
 ## v2.15.0 (2017-10-05)
 
 * Add new Amazon RDS ca-central-1 certificate CA to Amazon RDS SSL profile #1809

package.json

@@ -13,7 +13,7 @@
   ],
   "repository": "mysqljs/mysql",
   "dependencies": {
-    "bignumber.js": "4.0.4",
+    "bignumber.js": "4.1.0",
     "readable-stream": "2.3.3",
     "safe-buffer": "5.1.1",
     "sqlstring": "2.3.0"