Add utils package. Includes unittest support.
More api docs.
Move sparse vector support to les.ext.scipy package.
Remove logging. See les.utils.unittest.
Add local elimination optimizer -- LEO.
Add more docs. Speedup LES.
Update knapsack problem API, add test.
Add doc.
BILPProblem API has been updated.
Add bin. Temporary?
Fix bug with load_problem.
BILPProblem API has been updated.
Move coin support to les.ext and osi solvers to les.solvers.
Update bilp_problem API.
Add name to constructor.
Update coin support.