Some enhancements and minor breaking changes. Details in wiki https://github.com/neomerx/json-api/wiki/Upgrade-Notes#to-080-from-071.

Additionally to implemented changes it's planned to extract from ParametersInterface data related to headers and keep only data as field sets, included paths, sorting params, pagination params, filtering params. Why? it's cleaner and new interface would better suite role as an input for SQL builders to select/sort/filter data.