Websocket-client

- support keep alive for WebSocketApp(ISSUE34)
- fix some SSL bugs(ISSUE35, 36)
- fix "Timing out leaves websocket library in bad state"(ISSUE37)
- fix "WebSocketApp.run_with_no_err() silently eats all exceptions"(ISSUE38)
- WebSocketTimeoutException will be raised for ws/wss timeout(ISSUE40)
- improve wsdump message(ISSUE42)
- support fragmentation message(ISSUE43)
- fix some bugs

- Only log non-normal close status(ISSUE31)
- Fix default Origin isn't URI(ISSUE32)
- fileno support(ISSUE33)

- allow to set HTTP Header to WebSocketApp(ISSUE27)
- fix typo in pydoc(ISSUE28)
- Passing a socketopt flag to the websocket constructor(ISSUE29)
- websocket.send fails with long data(ISSUE30)

- allow to set opcode in WebSocketApp.send(ISSUE25)
- allow to modify Origin(ISSUE26)

- many bug fix
- some performance improvement

- fixed problem to read long data.(ISSUE12)
- fix buffer size boundary violation