Sculpting and polishing

There hasn't been a lot of time since PyWeek to move the game much further on: just some spare hours in the first couple of days, and then some spare hours today. Still, we can now activate the Triangle, being careful to expose the treasure of the thieving hordes first; otherwise the vortex is unleashed on the player! And I haven't yet started on introducing the various naval powers whose mission it is to stop you definitively...