Fixed zooming in with the mouse wheel changing the selected slot.

Zoom will now dynamically adjust your mouse sensitivity while zooming, so that high levels of zoom will not cause the camera to move too quickly. (Thanks to Mersid!)

Added a “Check held item” setting to BuildRandom. When checked, BuildRandom only builds while you are actually holding a block. Turn this off to build with fire or if you just want to right click with an empty hand in random places.

Added an “Always FastPlace” setting to BuildRandom. Builds as if FastPlace was enabled, even if it’s not.