Web-based design platform Canva has acquired the Affinity creative software suite, positioning itself as a challenger to Adobe’s grip over the digital design industry. Canva announced the deal on Tuesday, which gives the company ownership over Affinity Designer, Photo, and Publisher — three popular creative applications for Windows, Mac, and iPad that provide similar features to Adobe’s Illustrator, Photoshop, and InDesign software, respectively.Official figures for the deal have not been reveal...