`IOException` thrown while using `statz migrate minecraft` command.

[Gk0Wk]

I have a lot of players on my server, so there are plenty of JSON files in world/stats. When I tried to execute statz migrate minecraft on the console, there came a lot of IOExceptions (The console alerted me with an INFO-level log, even though you caught all exceptions of that type in ImportManager.java). The logs are like: [Server] [15:44:58 INFO]: IO: Too many open files..

I found that in the method getUserStatisticsFile of ImportManager.java, just open a FileReader using JSONObject rootObject = (JSONObject) new JSONParser().parse(new FileReader(playerStatistics));. May be manually close it?