PKGBUILD update
Merge branch 'master' into sphinx-migration
First pass from converting `aura2-design.tex` to rst directly without using
wiki:
    - generated with `pandoc -f latex j-t rst -RS --normalize --toc
                      --reference-links -o design.rst`
    - Fixed inconsistent headers
    - Anything that couldn't be converted was kept as raw LaTex for this pass.