11-09-11 fix %(GROUP)s for the OVERFLOW total

03-05-05 fix --print OVERFLOW key lookup to return 0/nil value

03-04-05 avoid possible floating point underflow/overflow

03-02-19 add `-' field operand to just count records or groups

03-02-11 add --print=format; Vmbest => Vmlast

03-02-07 add --count; check variable/type print width hint; allow width overflow

03-01-24 use cxcast() for group value pretty print

03-01-08 fix bucket alloc size

02-12-25 first release