Version 1.5 of TweetDeck has arrived, with a heavy emphasis on ensuring you can navigate those columns easily. The update adds arrow buttons, a horizontal scroll bar and gesture support if your trackpad is similarly enabled. There's also a new action button appended to each tweet, which will give you all the powers of the web version in a single click, ensuring you can follow (or otherwise) anyone who catches your eye in an instant. It's available right now for Windows, OS X, online and as a Chrome app -- there's even an informative video avail
