replaced metaclass/__new__ insanity with a __call__()
replaced metaclass/__new__ insanity with a __call__()

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