- Prepared changelog for next release

application/xacml+json
- Added resource "version" with GET method to get product metadata, as
described in https://jira.ow2.org/browse/AUTHZFORCE-30 (product name,
version, release_date, uptime, REST API doc URL)
- Added supported accept/content-type = application/xacml+xml on
/pap/policies for XACML PolicySet payload, and on /pdp for XACML
Request/Response payload

profile of XACML on pdp resource (Request and Response)

folder '/org/ow2/authzforce/authzforce-ce-rest-api-model/5.4.0'

- Fixed issues with cxf-wadl2java-plugin when using multiple
representation types with defined element in the WADL, after migrating
CXF version from 3.1.0 to 3.1.9