use lodash.clonedeep instead of clone

lib/winston-loggly.js

@@ -6,7 +6,7 @@
  *
  */
 
-var clone = require('clone'),
+var cloneDeep = require('lodash.clonedeep'),
   loggly = require('node-loggly-bulk'),
   util = require('util'),
   winston = require('winston'),
@@ -102,7 +102,7 @@ const validateMetadata = meta => {
   } else if (typeof meta !== 'object') {
     return { metadata: meta };
   } else {
-    return clone(meta);
+    return cloneDeep(meta);
   }
 };
 

package.json

@@ -28,7 +28,7 @@
     "winston"
   ],
   "dependencies": {
-    "clone": "^2.1.2",
+    "lodash.clonedeep": "^4.5.0",
     "node-loggly-bulk": "^2.2.4",
     "winston": "^3.2",
     "winston-transport": "^4.3.0"