Mark Sumner

**Context:** - I compress a folder using py7zr >= 0.21.0: ``` ZSTD_FILTER = [{"id": FILTER_ZSTD, "level": ZSTD_COMPRESSION_LEVEL}] with SevenZipFile(, mode="w", filters=ZSTD_FILTER) as zst_handle: for root, dirs, files in os.walk(): for...