Refactoring code;
Clean up settings and admin URL mapping and response JSON structure;
Fixed method POST and cookies headers;
Fixed entry header field oder and name case;
Deleted third-party module python-requests dependency.
Fixed start.sh.
Fixed chunked type of Transfer-Encoding.
Fixed Transfer-Encoding header field.
Deleted urllib2 dependency.
Updated function tests.
Updated git ignore filter.
Refactoring code.
Catch read/write/DNS timeout and response 504.
Added admin function test.
Improving add_proxy_server.sh.
Refactoring slot handler in decorator;
Using multiprocessing.Manager list instead of dict to store proxy node list;
Fixed request stat.
Append version info into argument parser.
Fixed update settings API.
Separated proxy authentication and node proxy authentication.
Fixed request stat for node mode.
Fixed node proxy authentication in func test_proxy_node.
Fixed HTTPS/method CONNECT handler in slot mode.
Fixed scheduling.
Updated docs.