Netty 4.0.33.Final 发布，高性能网络框架

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　　Netty 4.0.33 发布，此版本包括 60+ 改进：bug 修复，性能改进和新特性。
　　主要改进：

• 　　Fix race-condition when allocate from multiple-thread (#4388) (#4198)
  
• 　　OpenSslServerContext reinitializes the provided TrustManagerFactory with the key cert chain (#4387) (#4355)
  
• 
  　　Improve>
  
• 　　Always return a real slice even when the length is 0 (#4368)
  
• 　　Fix possible assert error in GlobalEventExecutor (#4367) (#4357)
  
• 　　Correctly handle bitshifting if system does not support unaligned access (#4366)
  
• 　　Add *UnsafeHeapByteBuf for improve performance on systems with sun.misc.Unsafe (#4361)
  
• 　　Allow to disable reference count checks on every access of the ByteBuf (#4344)
  
• 
  　　A number of toString() methods on>
  
• 　　Forward decoded messages more frequently (#4322) (#4284)
  
• 　　Ensure pending tasks are run when EmbeddedChannel.close(...) (#4322) (#4284
  
• 　　Implement SSLSession.invalidate() and isValid() for OpenSSLEngine (#4307)
  
• 　　Add support for server-side renegotiation when using OpenSslEngine (#4304)
  
• 　　Correctly reset markers for all allocations when using PooledByteBufAllocator(#4278)
  

　　详情请看 our issue tracker。
　　Netty 提供异步的、事件驱动的网络应用程序框架和工具，用以快速开发高性能、高可靠性的网络服务器和客户端程序。
　　体系结构图

　　在线Javadoc：http://tool.oschina.net/apidocs/apidoc?api=netty