quad: Use Boost matrix.

Signed-off-by: Matthew Emmett <memmett@gmail.com>
encap: Stop wasting space during interpolation.

Signed-off-by: Matthew Emmett <memmett@gmail.com>
Style.

Signed-off-by: Matthew Emmett <memmett@gmail.com>
ad: Tidy/WIP.

Signed-off-by: Matthew Emmett <memmett@gmail.com>