The header levels have been switched to correspond more with the Sphinx
suggested standards and the troubleshooting section has been
restructured to make it easier to find solutions. Minor markup changes
and other changes are also included in this commit.
This requires a couple of minor changes to custom segments. The segment
`highlight` key has been renamed to `highlight_group`, and segment
functions must return a list of segments dicts instead of just a dict.
Closes#88.
- Added notes about where common and extension-specific configuration is located
- Added common.paths config.json option description
- Fixed user-defined segments location found in segments section
- Fixed Themes/segments/module reference text