InnerProducts working as an operator. Simplifications and generalizations in inner product code.
Edge inner products updates for 1D
more object oriented innerProducts
bug fixes in TreeMesh
Fixes #68
More tests on more meshes, IPDeriv returns a function.
pre multiplication in innerproduct code.
Add tensorType to problem.
closest inds for 1d mesh
generalize the derivs for innerProducts
Change innerProduct to take sigma not tensorType.
write test for invProp and invMat (failing)
implement and test harmonic averaged derivatives
remove tensor type property from problem.
Merge pull request #75 from simpeg/innerProducts

Inner products derivative