Update the sqlalchemy to non-beta version.
Update the sqlalchemy to non-beta version.

pombredanne/Bookie,GreenLunar/Bookie,charany1/Bookie,bookieio/Bookie,bookieio/Bookie,skmezanul/Bookie,teodesson/Bookie,bookieio/Bookie,wangjun/Bookie,pombredanne/Bookie,charany1/Bookie,adamlincoln/Bookie,adamlincoln/Bookie,teodesson/Bookie,wangjun/Bookie,adamlincoln/Bookie,wangjun/Bookie,pombredanne/Bookie,bookieio/Bookie,adamlincoln/Bookie,wangjun/Bookie,charany1/Bookie,teodesson/Bookie,skmezanul/Bookie,skmezanul/Bookie,skmezanul/Bookie,teodesson/Bookie,GreenLunar/Bookie,GreenLunar/Bookie,GreenLunar/Bookie