Add changelog for 2.5
Add changelog for 2.5

isotopsweden/wp-papi,isotopsweden/wp-papi,nlemoine/papi,ekandreas/papi,nlemoine/papi,wp-papi/papi,isotopsweden/wp-papi,wp-papi/papi,ekandreas/papi,nlemoine/papi,ekandreas/papi,wp-papi/papi