add release notes for version 0.7
add release notes for version 0.7

cujojs/curl,runt18/curl,marian-r/curl,cujojs/curl,vtex/curl,vtex/curl,djkost85/curl-1,djkost85/curl-1,runt18/curl,vtex/curl,jaredcacurak/curl,marian-r/curl,djkost85/curl-1,runt18/curl,dfd07d/curl,jaredcacurak/curl,marian-r/curl,dfd07d/curl,jaredcacurak/curl,cujojs/curl,dfd07d/curl