ddd 2018-10-29
 
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Suggested order:

sudoku.py (a Gurobi copyrighted example) -- peek at this to see how Gurobi
          uses .addVars() and .addConstr() to set things up

pres_sched_4toyObj.txt     -- some toy examples that do not open data files

data5x4.txt
data8x4_same.txt
data8x4_vary.txt
                           -- the files below take data as input
presentation_sched.txt     
presentation_sched.py      
quiet_scheduler.py