SuperSocket 1.6.6

!! The changes are included in this release: * fixed an unhandled exception caused by performance counter when stop instances; * fixed wrong close reason code when the client close the connection gracefully; * fixed a serious bug about the SAE object is not released after the session is closed; * fixed the serialization issue about hot configuration updating in isolation mode; * exposed the api about setting max request length in code; * added a configuration option for the working process startup timeout (in Process isolation model); * added the configuration option autoStartAfterUnexpectedShutdown to control whether auto start the working process if it crash unexpected (in Process isolation model); * 修复了停止实例时性能计数器导致的未捕获异常; * 修复了当客户端正常关闭连接时错误的CloseReason返回值; * 修复了一个关于SAE对象在连接关闭后没有正常释放的严重缺陷; * 修复了以个在隔离模式下热配置更新导致的序列化异常; * 新增了在代码中设置最大请求长度的API; * 增加了工作进程启动超时的配置选项 (进程级别隔离模式); * 增加了配置项 autoStartAfterUnexpectedShutdown 用以控制在工作进程意外关闭时是否重启进程 (进程级别隔离模式);