Features:
* [RFC2616](http://www.ietf.org/rfc/rfc2616.txt) compliant (AFAIK)
* GET, POST, OPTIONS, HEAD, PUT, DELETE, TRACE, MKCOL, PROPFIND,
PROPPATCH, LOCK, UNLOCK, MOVE and COPY
* HTTP/0.9, HTTP/1.0 and HTTP/1.1
* chunked encoding
* generating requests using Chunked Transfer-Encoding
* Pools of connections to each webserver
* Pipelining support
* Download to file
* Asynchronous requests. Responses are streamed to a process
* Basic authentication
* Supports proxy authentication
* Supports socks5
* Can talk to secure webservers using SSL
and more