add SimpleProxyHandler for goagent 3.2
refine SimpleProxyHandler
refine SimpleProxyHandler
refine SimpleHTTPServer
port pacserver to SimpleProxyHandler
option auto switch ipv4/ivp6
Merge pull request #4 from dxmtb/3.0

添加profile选项auto自动选择ipv6/ipv4
refine indent
fix CeoIP.dat path error
Merge pull request #5 from binyuj/fixpath

fix CeoIP.dat path error
bugfix for crlf
add AdvancedProxyHandler
refine AdvancedProxyHandler
add ProxyChainMixin
refine AdvancedProxyHandler
bugfix for AdvancedProxyHandler
add GAEProxyHandler2
add SimpleProxyHandlerFilter
refine SimpleProxyHandlerFilter
refine SimpleProxyHandlerFilter