S000: fine tune some boulders

Change-Id: Ib8c09a583c46cb6c99b17ffc30d53eff61316ce2
S000: new rooms

Change-Id: I42c6794d7174e0671d3619d273482b17c6fde6db
S000: Adding new corner tile

Change-Id: Ie5b286b872268c0f11c2f5e3651db37e216fe536
Merge pull request #30 from autowitch/working

Working