attempt to get SessionTest to close transactions better
attempt to get SessionTest to close transactions better

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