regression
modified util::time API
improved ZSTD_compressBlock_opt_extDict_generic
Add BUCK files for Nuclide support
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