- factor out determination of current version id out of _collect_update_commands and _collect_delete_commands
- factor out determination of current version id out of
_collect_update_commands and _collect_delete_commands

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