Guhs

Small fixes. Same requirements as 1.2.0.

• Moving in cheese sauce. You couldn't move at all in kaas saus (cheese sauce) or stomach acid. Now you wade and swim through it, slowly, like through lava.
• Bedrock floor in the Guhmension. The bottom layer is bedrock instead of netherrack (for land you haven't visited yet; existing chunks keep their floor).
• Tamed guhs are safe. You can't hurt someone else's tamed guh any more (also not with arrows), and a tamed guh never hurts a player.
• Travel Guhs in buildings stay put. A Travel Guh that came with a building can't be picked up any more (you couldn't put it down in a building again either).