test all zstd-fast-modes
make it compile with gcc 10.2.0
update lzbench version to v1.8.1
Update README.md with a new results
Travis CI: create static builds for tests using qemu
Update NEWS
results updated with lzbench v1.7.1
disabled lzrw -2 (crashes on ARM)
updated NEWS reverted lz4hc.c
Merge remote-tracking branch 'refs/remotes/origin/dev'