Websocket-client

- can't set timeout on a standing websocket connection (102)
- fixed local variable 'error' referenced before assignment (102, 98)

- lock some method for multithread. (92)
- disable cert verification. (89)

- fixed exception when send a large message (84)

- fixed to work on Python2.6 (83)

- Support python 3(73)
- Support IPv6(77)
- Support explicit web proxy(57)
- specify cookie in connect method option(82)

- MemoryError when receiving large amount of data (~60 MB) at once(ISSUE59)
- Controlling fragmentation(ISSUE55)
- server certificate validation(ISSUE56)
- PyPI tarball is missing test_websocket.py(ISSUE65)
- Payload length encoding bug(ISSUE58)
- disable Nagle algorithm by default(ISSUE41)
- Better event loop in WebSocketApp(ISSUE63)
- Skip tests that require Internet access by default(ISSUE66)