Lindsey Heagy

Contributor guide

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We should add a contributor guide that includes pointers on how people can jump in, resources on how to get in touch, pr overview, how to make a release, style...

In order to have more consistent formatting of code across discretize, I propose that we use [black](https://github.com/ambv/black) to do the formatting for us. It is designed to produce easier-to-navigate diffs...

AUTHORS.rst

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The author list is out of date. Is this something we want to be maintaining manually? or should we just point to github contributions? cc @rowanc1

The size of a face interpolation matrix doesn't match the number of faces 

meshutils.exampleLrmGrid --> examples ?

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*originally from:* simpeg/simpeg#278 this util code looks better suited for Examples to me, thoughts @rowanc1 ?

in #601, we pinned to sphinx version 1.5.6 as there was a change in the sphinx api that is incompatible with the most recent sphinx gallery. Once sphinx-gallery/sphinx-gallery#241 closes, we...

*originally from* simpeg/simpeg#105 Should be able to call: (for diagonal models, it is simple, for fully anisotropic, it involves a matrix solve) self.mesh.getEdgeInnerProductDeriv(self.curModel.sigma, invMat=True)(u) self.mesh.getFaceInnerProductDeriv(self.curModel.mui, invMat=True)(u)

cache the averaging matrices

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right now, we use `sp.hstack` on every call to the averaging matrices to stack the contributions from the x, y, z components (if in 3D). This can be a slow...

inner product names

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- `getEdgeInnerProduct` --> `edgeInnerProduct` - `getFaceInnerProduct` --> `faceInnerProduct` thoughts @rowanc1 ?

Right now, there is a mix of the existence of `Stencil` operators, which contain the core of the operator, but not the length scales associated with a specific mesh, and...