v1.5.7
AsyncIO compression part 1 - refactor of existing asyncio code (#3021)
Coalesce Almost All Copyright Notices to Standard Phrasing
Also Pin Dockerfile Dependency Hashes
Rename "External Matchfinder" to "Block-Level Sequence Producer" (#3484)
inform manual users that it's automatically generated
codemod: ZSTD_paramSwitch_e -> ZSTD_ParamSwitch_e
[linux] Expose ZSTD_compressSequencesAndLiterals() in the kernel
Fix wrong conditions
[contrib/pzstd] Prevent hangs when there are errors
Merge pull request #4218 from facebook/externC
moved snap to /contrib
created contrib/cleanTabs