Bulgarias parliament on Tuesday formally approved the countrys new government proposed by the two main political rivals in a bid to end a 30-month-long political crisis, restore stability and spur economic development in the poorest EU member country.The GERB party of ex-Premier Boyko Borissov, which won the April general election, and the runner-up, the pro-European liberal coalition We Continue the Change Democratic Bulgaria have agreed to form the first-ever Bulgarian government where the post of prime minister will change hands halfway through.