Solids - more linear fixes

Solids - remove redundant code

Solids - fix comment typo

make style

examples/solids: use CP line search by default

Solids - partial fix for linear elements

examples/solids: enable -snes_mf_operator

Solids - label field components for viewing

Solids - enable box meshes outside of test mode

Small doc fixes (#499)

* A small shift in notation

* Docs: Clarify ex2-surface mathematical description

* Refactor \boldsymbol -> \bm

* Refactor \mathbf -> \bm

* Sphinx: clear html_stati

Small doc fixes (#499)

* A small shift in notation

* Docs: Clarify ex2-surface mathematical description

* Refactor \boldsymbol -> \bm

* Refactor \mathbf -> \bm

* Sphinx: clear html_static_path

This is needed to avoid the 'html_static_path entry '_static' does not exist' warning

https://github.com/readthedocs/readthedocs.org/issues/1776

* Fix some incosistencies

* Invert inner products (u,v) -> (v,u)

* Add SVG figure for coordinates on the sphere

* doc: use dirhtml on readthedocs

* Improve caption of sphere coords figure

* Add reference to figure in the bps on the cubed-sphere section

Co-authored-by: Jed Brown <jed@jedbrown.org>

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Solids - stop load increments early if SNES diverges

Solids - log increment in -snes_monitor

Solids - add vtu files to make clean

Solids - fix hyperFS residual and Jacobian

Merge pull request #496 from CEED/v0.6changelog

v0.6: Release notes

ex2-surface: fix documentation

examples/petsc: remove redundant VecZeroEntries

examples/petsc: give KSPSetFromOptions precedence over -benchmark

User manual style: alphabetize refs

Merge pull request #494 from CEED/valeria/update-README

Update READMEs

Update examples/README.rst

Part of the Bakeoff Problems description in examples/bps.rst which was simple enough (i.e., did not include complex math) is now included from the examples/README.rst

READMEs and docs: Some small inconsistency fixes and improvements

Merge pull request #294 from CEED/cuda_petsc_bps

Adapt PETSc BPs to use CUDA

petsc/bpsraw: use same reporting code as bps

petsc/bpsraw: fix Vec creation