how about refresh hexagram file in ching(6)

[battery dude]

i saw that ching(6)'s hexagram file keeped 30 years,well somebody to
refresh it,and change catching to using plumblossom number from shao
yong's method
and script for reference
```
for mod in 6 8 8
do
echo $RANDOM\%$mod|bc
done|tr "\n" " "
date
```