Bump to v4.16.0.

memoize.js

@@ -60,14 +60,14 @@ define(['./_MapCache'], function(MapCache) {
         return cache.get(key);
       }
       var result = func.apply(this, args);
-      memoized.cache = cache.set(key, result);
+      memoized.cache = cache.set(key, result) || cache;
       return result;
     };
     memoized.cache = new (memoize.Cache || MapCache);
     return memoized;
   }
 
-  // Assign cache to `_.memoize`.
+  // Expose `MapCache`.
   memoize.Cache = MapCache;
 
   return memoize;