zpaq v6.17, Dec. 13, 2012. Fixed display of international characters. libzpaq v6.17 has slightly faster SHA1. Has bugs. Do not use.
zpaq v6.18, Dec. 14, 2012. Bug fix.
zpaq v6.19, Jan. 23, 2013. Splits into zpaq (journaling archiver) and zpaqd (development tool). Adds methods 5-9. libzpaq v6.19 adds single pass compression checksums.
bmp_j4c, Jan. 24, 2013. Updated .bmp config file to work with new zpaq/zpaqd syntax.