Allow mindcrafters to use GTB with space bar
Using Greater Telekinetic Blast is UI-wise similar to using teleportation - moving the cursor and then pressing space when in the right square... Except unlike teleportation, GTB is cancelled (and PP is spent) if space bar is used. Moreover, I'm fairly sure that in 1.1.1 you could still cast it with space bar.
Given that the two similar UI events of teleport and GTB are similar otherwise, space bar should also trigger the GTB, and not function as a duplicate for 'Z', or aborting.