General
---------------------------------------------------------
- Write unit tests
- Write documentation

Zend_Http_Client_Adapter
---------------------------------------------------------
- Socket: Implement keep-alive connections
- Write the Curl adapter
- Write the PSocket (persistant sockets) adapter (?)

Zend_Http_Client
---------------------------------------------------------
- Implement digest HTTP authentication
- Implement proxy

Zend_Http_Cookiejar
---------------------------------------------------------
- Path overriding: currently, if you have cookies with the same name from 
  http://myserver/root/ and cookies from http://myserver/root/dir/ 
  and you access /root/dir/, the client will send all cookies, while the
  cookies belonging to /root/dir/ should override the /root/ cookies.

