Restructured main doc page
Minor doc changes
Add new overview page
Add new installation page
Add new getting started page
Add new background page
Remove width/height attributes for banner logo
Put user doc link directly in main doc page
Add in-development API note
Centralize dependency warnings
Add PSF Reference/API
consistent doc indentation [skip ci]
Update main doc page [skip ci]
datasets docs
Add background docs
Small change to psf docs
getting started docs
Add docstring to detection modules
Add detection docs
small change in segmentation API docs