added setplot.py to tests/dtopo1
fixed numpy imports, but still need to clean up np vs numpy
moved import matplotlib statements in hopes that travis will now work on nosetests.
missing tests/dtopo1/maketopo.py
Merge pull request #68 from rjleveque/topotools

Topotools branch updated to 5.1.0
Merge remote-tracking branch 'clawpack/topotools' into topotools
Use Numpy's allclose function for delta comparison