added `a_request_methods' argument to WSF_ROUTER_SELF_DOCUMENTATION_HANDLER.mapping_documentation
added similar argument to WSF_ROUTER_SELF_DOCUMENTATION_ROUTER_MAPPING.documentation
Renamed WSF_ROUTER_METHODS as WSF_REQUEST_METHODS
Enhanced WSF_REQUEST_METHODS with new has_... function
Added WSF_ROUTER_VISITOR and WSF_ROUTER_ITERATOR that may be useful to iterate inside the router.
we may improve the implementation of the router using those visitors in the future.
Improved the WSF_DEFAULT_RESPONSE to embedded suggested items (typically based on pseudo self documented router)
- raw_header_data: like meta_string_variable
- read_input_data_into (buf: STRING)
- is_content_type_accepted (a_content_type: READABLE_STRING_GENERAL): BOOLEAN
Changed raw_input_data to return IMMUTABLE_STRING_8
Added WSF_METHOD_NOT_ALLOWED_RESPONSE
Added WSF_TRACE_RESPONSE to respond TRACE request
Now Not_found response return html content if the client accepts, other text/plain
Implemented TRACE response, and Method not allowed as implementation of WSF_ROUTED_SERVICE.execute_default
