port to new Async interfaces
remove unused variable
bump trunk to 0.9.2
Note another possibly interface breaking change in TODO
add a Lwt file responder (wip) and relax the not_found function
add respond_file signature
fix mirage signature
test server now serves files also
Lwt: more robust exception handling in respond_file
do not block in Lwt accept handler for the callback
mark a TODO
Use the URI normalisation to make file serving more robust
TODO ho hum
port to ocaml-uri's improved query parsing, which results in query strings returning a string list of possible keys instead of a single result

closes #5
version constrain of uri>=1.3.2
update CHANGES
build documentation by default

closes #4
Lwt: in debug mode, display the size of each read chunk
in chunked encoding, read the exact number of bytes required.

Closes #3
add test case for #3 that is suitable for c&p into utop too