Note that config.exact defaults to 0 and point users to WebPEncode() if
the default isn't acceptable. This duplicates the comment from encode.h
for visibility. Follow up to:
6d2e11ec encode.h: mention 'exact' default in WebPEncodeLossless*
Bug: 449296530
Change-Id: Iba44dbcbb179bd80ea0a6b9e129b2c7e0a406916
Break the main README into into multiple pages in the doc/ directory,
except for the tests, swig and webp_js docs which are in the corresponding
directories.
The webp mux doc is merged into the API doc and the tools doc.
Change-Id: Ia407617dd88094f4662841d37947cfef80799914