Major overhaul

I hated to overhaul a pack I just released so hugely, but I probably shouldn't have released it as early as I did.  In this overhaul, I've removed all unnecessary polygons, reducing the overall polycount a huge amount, and added tons more variations to curves as-well-as new props.  The new props include a giant swinging hammer, coins, treasure chest, improved bridges and ramps, and even a lighthouse!