v1.3.3
UTIL_getFileSize() returns UTIL_FILESIZE_UNKNOWN on failure
improved ZSTD_compressBlock_opt_extDict_generic
Update BUCK files
ZSTD_decodingBufferSize_min()
zlibWrapper/README.md: updated info about gzip file access functions
updated zlib copyright notice
updated license header
gzguts.h updated to zlib 1.2.11
updated a bunch of headers
fixed zlib wrapper