Ability to step left and right via keypress while viewing history

[Apthorpe]

Right now while viewing the history, AFAIK the only way to step left and right is clicking on the tiny left and right buttons. Their being small makes them annoying to click when you're doing a lot of this stepping, but even if they were large, it would still be nice to have the ability to step via, say, the left and right arrows on the keyboard.