General cleanup
Merged ui improvements from gh-pages back into master.
Merged ui improvements from gh-pages back into master.
Switched out singleton class, Crust, for a Cell class representing a container for a RockColumn.
Plate seeds nearer to the antipode of the supercontinent centroid now travel in the opposite direction, as is what appears to happen in reality (Dziewonski et al. 2010; Mitchell et al. 2012)
Cherry-picked some refactorings to shader code from experimental branch
Plate seeds now spawn on the crust of parent plate
(re)implemented triple junctions during split operations, this time with faster results.
Fixed erosion bug, adopted new estimate for precip based on global average.