* https over socks fix: fix issue with https url handling by using 'adapter.proxy_manager_for()' instead of 'adapter.get_connection' to get proxy manager, which create connection indirectly (parallel to no-proxy path).
- simplify socks config, avoiding global monkey-patch, as requests/urllib3 now support socks proxy directly and do not require patching global socket.
- add SOCKS_DISABLE env dynamically disabling socks proxy
warcserver: SOCKS proxy:
- add support for running warcserver through a socks proxy specified via SOCKS_HOST and SOCKS_PORT
- move socks patch setup, http max_header adjustment to http module
- logging: print stack trace only if debugging
- add pysocks to extra_requirements, enable in ci
- add simple test (not actual proxy) to check that connection through proxy is attempted
- docs: add SOCKS proxy section to docs