Yoinky Sploinky

The zip-to-point function needed some work, so I worked on it.

• Zip-to-point is no longer handled by a single raycast in the center of your screen.
• Points now lie only on the edge of buildings.
• You can zip through buildings. (Not intended, but you can. Will fix later.)

I also did some work on the map.

• Buildings are now made of brick.
• The city is much larger, but still just 1 block copy-pasted over and over.
• Buildings are now flat so you can wall run.