Load the students and leaders from csv files, and add in a constraint for leaders to not have the same people more than once.
And we want at least one boy and one girl in each group.
Check for duplicate students for leaders.
Check for duplicate students for leaders.
Check for groups with one gender.
Save the results in a csv file.
Save the results in a csv file.
Don't seed this random number generator.
Merge pull request #1 from matthewhampton/master

It also does leaders and gender now