Formalize doc requirements
Add livereload to docs
skip_api_docs option in docs/conf.py
Stub docs/handbook
Convert Tutorial section of PIL handbook
Concepts
Appendix stubs and all file formats
Writing your own file decoder
Switch to sphinx-better-theme
Fix minor typo
Fix page title
Fix version number on docs
Pare down index page sidebar
Split API reference into PIL vs plugins
Decrease ToC max depth to 2
Also skip plugins.rst if skip_api_docs
Fix a tutorial section heading title case
Couple of compatibility updates
Mention WebP on the supported formats page
Update TIFF compression notes