Some Libra Association members like Andreessen Horowitz and Coinbase are double-dipping, backing a competing cryptocurrency developer platform. Launching today with over 50 partners, non-profit The Celo Foundation’s ‘Alliance For Prosperity’ offers a way for developers to build decentralized mobile apps that are based on Celo’s blockchain platform and USD stablecoin. The open-source Celo platform is still in testing with plans…