add sexp depedency
oasis spam
sexp'd all the easy types
manual sexp converters for header
update type generator to use sexp
regenerate code.{ml,mli}

now every type comes with sexp converters
sexpify Response.t
wrapper for Uri to host sexp converters
sexpify Request.t

Use the uri wrapper in the type definition
get rid of uri sexp
oasis noise
4.00.1 compatibility
Add CHANGES