shallow_water.jl

[fxgiraldo]

Hey guys, the shallow water looks pretty cool. One comment: you shouldn't need line 131. If I understand correctly, you are reimposing U=h*u but you have already evolved U in time correctly.

[willow-ahrens]

Thanks for the tip! I think I may have included that line because it was in the original shallow_water, but since it's not necessary I can remove it.