remove() should issue a close() on existing session
remove() should issue a close() on existing session

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