although the feature still calling as "experimental", but zstd uses this in its own client since v.1.4 IIRC and the only known drawback would be significant regress of compression ration if guess considerably underestimates, but it does no matter in case of known file size.
- update ZstdHandler.cpp to support also "zst" and "tzst" as
valid extensions
- update README.md to reflect these chnages
Signed-off-by: Defrag257 <defrag257@qq.com>
Reviewed-by: Tino Reichardt <milky-7zip@mcmilk.de>
- you can open / crate .tar.zst files now
- direct compressing of files with zstd works also
- you can also open files compressed with pzstd
- next version will do also threaded compression like pzstd does
- zst files can be registred with 7-Zip ZS now
- update to latest zstd dev release v1.0.1
- the About Box will give you a hint, that this 7-Zip is not the default one
