Todo list v1.0:

* if-modified header handling for statichandler

* more configurable request logging.

* Better doco

* Better/more thorough tests

* multipart request handling

* ParameterParseHandler: multivalued params

* figure out where socketfactory::ssl is, and how it works

* put $VERSION in all mods

* CGI handler

* figure out how to unblock on long requests?