Dear Maintainer,
https://www.7-zip.org/sdk.html
Upstream has release quite a few releases, some are very interesting:
21.07: Some minor changes and fixes.
21.06: The bug in LZMA encoding function was fixed.
21.03 beta: LZMA dicrionary up to 4 GB. Speed optimizations.
21.02 alpha: macOS and Linux support. Speed optimizations.
19.00: Encryption strength for 7z archives was increased.
18.06: Some speed optimiztions in LZMA/LZMA2 code.
18.05: Some speed optimiztions in LZMA/LZMA2 code.
18.01: Some changes in LZMA2/xz multithreading code for compressing.
Some bugs were fixed.
Latest 22.00 was just out a few weeks ago, I'm not sure whether it's
stable or not.
But 21.07 should be stable enough to package.
Cheers,
--
Roger Shimizu, GMT +9 Tokyo
PGP/GPG: 4096R/6C6ACD6417B3ACB1