Updated UOWEventHandler so that it uses session.add() instead of session.save_or_update(). Fixes #1208.
Updated UOWEventHandler so that it uses session.add() instead of session.save_or_update(). Fixes #1208.

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