3 new commits pushed to

<https://github.com/RTimothyEdwards/magic/tree/master|master>

by RTimothyEdwards

<https://github.com/RTimothyEdwards/magic/commit/edb05fb3d149b8f65001dfdeef9112ad86171242|edb05fb3>

- More corrections to the method of calculating fringe capacitance

<https://github.com/RTimothyEdwards/magic/commit/ca0cb1322af8e6f250aec75eb0253a58b2396cb3|ca0cb132>

- A couple of corrections to the last commit, where the equation for

<https://github.com/RTimothyEdwards/magic/commit/10448788f9a79cb2a92734f69a035930e8c58a11|10448788>

- Found another error causing negative capacitances and fixed it, RTimothyEdwards/magic