-Added stub for resolveOverlaps
-Removed Ping.hs
-Really REALLY need to do a cleanup round
-Removing some Util functions
-New test files
-Minor cleanup
-Removed Multicolor.hs (been superseded by Elements.hs)
-Cleaned up most stuff
-Should probably still separate emission stuff from Elements
-Cleaned up some of Elements
-Added output SVG files
-Checked in Model.hs