this path gets redirected to a canonical - even if nonpermanent - one at
`{repo}/src/branch/{main-branch}/{path-to-file}`, that is
`{repo}/src/branch/development/{path-to-file}` in concrete terms.
the previous paths were resulting in 404s.
* make sure to latex-escape captions (for correct line breaks)
* enable showing captions
* enable listing subfigure captions
* make sure latex lof (list of figures) picks up on subfigure captions
* clarify we need the subcaption package for subfigures, not subcaptions
leo