Update documentation

[wbinventor]

This is intended to start a conversation on the various features that have been implemented to the code over the last 6 months and which should be added to the documentation. Some items that come to mind that should be added to the online documentation before the next release include:

User's Guide

• polar quadrature API
• fixed source calculation API
• FSR volume correction API
• adjoint calculations
• plotting centroids, eigenmodes
• periodic boundary conditions

Theory & Methodology

• k-nearest neighbor CMFD updates
• krylov subspace solver
• adjoint solver

[wbinventor]

Added periodic boundary conditions to this list.

[wbinventor]

I compiled a list of updates we need to make to the documentation based on our "All Hands" day last week.

Installation

• [x] Remove deprecated --no-numpy flag
• [ ] Add Matplotlib as required dependency

User's Guide

• [x] Polar quadratures
• [x] Fixed source and criticality calculations
• [x] Moderator rings
• [x] Convergence criteria
• [ ] k-Nearest Neighbor CMFD
• [ ] Periodic boundary conditions
• [x] Change Circle to ZCylinder
• [x] Changes to Material and openmoc.materialize
• [x] Add new capabilities in openmoc.plotter
• [ ] Discussion of 3D geometries
• [x] Computing FSR / pin powers
• [ ] Adjoint calculations
• [ ] SPH factor calculator
• [ ] FSR volume correction
• [ ] Exponential evaluation options
• [ ] Multi-eigenmode Krylov solver

Theory & Methodology

• [ ] k-Nearest Neighbor CMFD
• [ ] Incorporation of nu-scatter into k-eigenvalue
• [ ] SuPerHomogenisation (SPH) factors
• [ ] Adjoint calculations
• [ ] Multi-eigenmode Krylov solver

Developer's Guide

• [x] Writing documentation
• [ ] References