Changes:

• Some more token optimisations. (8147 tokens)
• Silver Brick is now actually a block. (oops)
• Fixed platform placement being broken. I was checking the target tile before offsetting it instead of after.
• Reverted a token optimisation that accidentally removed mouse-based block placement. It appears this also fixed diagonal mining without the mouse.
• Mobs can no longer spawn within a 17x15 tile square centred on a campfire. Due to this, campfires are now a bit more expensive to craft, requiring 3 torches instead of 1. (8190 tokens)