RTD doesn't seem to want to refresh on a git tag so go back to using release numbers
RTD doesn't seem to want to refresh on a git tag so go back to using
release numbers

(cherry picked from commit 6b55842eef3a243d275bdd5630c1fe62d98e8371)

graingert/sqlalchemy,EvaSDK/sqlalchemy,davidjb/sqlalchemy,pdufour/sqlalchemy,zzzeek/sqlalchemy,ThiefMaster/sqlalchemy,epa/sqlalchemy,davidjb/sqlalchemy,sandan/sqlalchemy,j5int/sqlalchemy,itkovian/sqlalchemy,robin900/sqlalchemy,wfxiang08/sqlalchemy,olemis/sqlalchemy,davidfraser/sqlalchemy,sandan/sqlalchemy,graingert/sqlalchemy,brianv0/sqlalchemy,hsum/sqlalchemy,halfcrazy/sqlalchemy,hsum/sqlalchemy,inspirehep/sqlalchemy,WinterNis/sqlalchemy,wfxiang08/sqlalchemy,ThiefMaster/sqlalchemy,Akrog/sqlalchemy,olemis/sqlalchemy,wujuguang/sqlalchemy,monetate/sqlalchemy,elelianghh/sqlalchemy,brianv0/sqlalchemy,halfcrazy/sqlalchemy,bdupharm/sqlalchemy,Akrog/sqlalchemy,pdufour/sqlalchemy,elelianghh/sqlalchemy,dstufft/sqlalchemy,sqlalchemy/sqlalchemy,dstufft/sqlalchemy,wujuguang/sqlalchemy,276361270/sqlalchemy,epa/sqlalchemy,276361270/sqlalchemy,bootandy/sqlalchemy,WinterNis/sqlalchemy,j5int/sqlalchemy,EvaSDK/sqlalchemy,inspirehep/sqlalchemy,monetate/sqlalchemy,davidfraser/sqlalchemy,robin900/sqlalchemy,bootandy/sqlalchemy,bdupharm/sqlalchemy,itkovian/sqlalchemy