Corrects an import error when using echo_uow. Fixes #1205.
Corrects an import error when using echo_uow. Fixes #1205.

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