v1.5.0
[1.5.0] Deprecate some functions (#2582)
[license] Update year to 2021
Spelling (#1582)
[1.5.0] Move `zstd_errors.h` and `zdict.h` to `lib/` root
Remove duplicate CXXFLAGS
updating cold benchmark
Edit distance match finder
Fix wrong conditions
Add source level deprecation warning disabling to certain tests/utils (#2645)
[contrib][recovery] Add recovery_directory program
Add seekable roundtrip fuzzer (#2617)
moved snap to /contrib
created contrib/cleanTabs