Mobile market data and analytics provider App Annie will acquire mobile advertising analytics company Libring in a move the company says will help mobile publishers and brands to view market data and advertising analytics side-by-side. Why we should care Mobile execution and engagement is a critical component of many brands’ success. And with mobile ad spend projected to double to $375 billion globally by 2022, marketers can expect their organizations to double-down on analytics to show return on their investments.…