UI Changes:
New way of zooming: I realized this morning that clicking on an item in a chart no longer allowed you to drill into that item. Apparently this has been broken since I allowed free zooming and panning.
In order to fix this, the zoom-controls had to be adjusted. So to zoom you have use the left-mouse button to drag an area on the chart. Click right-mouse button to reset. (i.e. zoom out)