Build Options section [ci skip]
Updated Test/Support Matrix [ci skip]
Mode reference anchor
Many links to mode concept anchor [ci skip]
Merge pull request #1017 from wiredfool/build-docs

Build docs
Merge pull request #1018 from wiredfool/mode-docs

Mode docs [ci skip]
Update CHANGES.rst [CI skip]
Docs for PyAccess, PixelAccess objects [ci skip]
Docstring for Image.quantize. [ci skip]
Image.save docs, rename fp, link to params [ci skip]
Document all the save params for PNG, and their references [ci skip]
Note on info not used for saving [ci skip]
Merge pull request #1019 from wiredfool/load-docs

Docs for PyAccess, PixelAccess objects [ci skip]
Merge pull request #1020 from wiredfool/quantize

Docstring for Image.quantize. [ci skip]
Merge pull request #1021 from wiredfool/save-docs

Docs for Image.save [ci skip]
Update CHANGES.rst [CI skip]