Added docs
Python 2.6 tests compatibility fixed
Tests are python 3.2 compatible now
Added old ProxyManager API compatibility
Fixed comments
Some code cleanup
Added proxy property to PoolManager
Slight code refactoring and simplification, as suggested by @wolever
Changed some wording in tests (suggested by @t-8ch)
Another test diagnostic message change
Proxy Host header now includes port if provided
Fix deadlock in Tornado threads (single-threaded now)
Test cert verification via proxy
fix test_proxy_verified
increase timeouts to work on pypy
Removed unnecessary pool.proxy and pool.proxy_headers assignments in ProxyManager
Remove unncecessary proxy code from PoolManager
Fixed test coverage.