Deezer has had an obsession with new apps lately, redesigning its Android app and kicking off its mini-app platform on mobile devices. It's only fair that Windows 8 users get to join in with a new Deezer app of their own. The software offers the same mix of curated and on-demand streaming music as elsewhere, with a few accommodations for Microsoft's universe: listeners can use Charms to search or share their music, and multitaskers can