* doxygenize and update API documentation
* fix spelling
* add "fuzz" corpus for java decoder to improve coverage
* use upper-case-snake names for dictionary constant definitions
* use `LDFLAGS` in conventional `Makefile`
* add Brotli*TakeOutput methods
* * flushing now doesn't require additional call
* add Brotli*Version methods
* moved public headers to 'public' directory
* removed C++ API
* do not assume STDC_VERSION is defined
1) Use a tighter upper bound on the Huffman table size.
2) Remove unused argument len in ToUpperCase.
3) Remove unused no-op assignment in BrotliDecompress.
4) Fix include guard name.