Added the optional module to export
XQRS Functions,
describing RESTful endpoints which XQRS manages, what paths they
listen on, what they accept and produce etc
Optimised xqrs.xqy slightly. Less lines of code
Version 1.0.1 - 11th December 2018
Bug: When the authentication property was set to "application level"
on a HTTP App Server with the default user set to "nobody",
XQRS was unable to operate correctly