- Config options like ``search_type`` renamed to follow the upstream
API (``topic``).
- Default ``max_results`` is set to 5
- use image description if one exists
- add an init function to check engine's settings
- settings example: additional category 'ai'
To review the added documentation of this path::
make docs.live
and jump to: http://0.0.0.0:8000/dev/engines/online/tavily.html
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>