Existing application does not work with Fusion due to different
implementation of collection function. Fusion does not return non-XML
content such as XQuery files which means the endpoints are not
found. There is also a function name clash in openapi-tests-simple.xqm
which creates an error in Fusion with the sample endpoints.

Issue is resolved with recursive functions that use xmldb functions  in
order to find child resources and collections to build the list of uris in
place of existing base-uri function. This works in both Fusion and eXist

There is also an extension to the list of recognised xquery file
extensions to cover other used formats.

Release 1.6.0

bugfix: parse %rest:produces as array

fix: consider array for %rest:produces

Closes #1

See merge request !1

bugfix multiple test annotations and string()

customized tags

support multiple methods annotations and a single path mapped to multiple functions

increase performance, fix call for fallback congfig

by using a less strict, but much faster method to test if a module is 
prepared with RESTXQ annotations, we increase the performance by factor 
3. we call inspect:inspect-module#1 only for modules, that contains 
"%rest:"

add a parameter to trigger re-registration of REST functions