There is the bar in the center of toolbar, above the coordinates numbers. As you perform skills or crafts it slowly fills up. Once it is full a plus sign button appears to the right of it, clicking on the button opens a window. In this window, currently there are a dozen or so spots with up down arrows and a total at the top.

Currently you can't do anything in the window except close it, which removes the plus sign button. There are no visible character levels, but I think this could be a way to add to skills or improve stats.