Zopfli Compression Algorithm is a compression library programmed in C to perform
very good, but slow, deflate or zlib compression.

zopfli.c is separate from the library and contains an example program to create
very well compressed gzip files.

The basic functions to compress data are Deflate in deflate.h, ZlibCompress in
zlib_container.h and GzipCompress in gzip_container.h. Use the Options
object to set parameters that affect the speed and compression. Use the
InitOptions function to place the default values in the Options first.

Deflate creates a valid deflate stream in memory, see:
http://www.ietf.org/rfc/rfc1951.txt
ZlibCompress creates a valid zlib stream in memory, see:
http://www.ietf.org/rfc/rfc1950.txt
GzipCompress creates a valid gzip stream in memory, see:
http://www.ietf.org/rfc/rfc1952.txt

This library can only compress, not decompress. Existing zlib or deflate
libraries can decompress the data.

Zopfli Compression Algorithm was created by Lode Vandevenne and Jyrki
Alakuijala, based on an algorithm by Jyrki Alakuijala.