commit a note about 2to3
commit a note about 2to3

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