Solver instance can be reused and passed as argument in all methods. Fixed temporary constraints that were persistent.
Added generic deletion method call.
Combinatorial gene deletion in framed.design.combinatorial.
Clean version of combinatorial deletion. Parallelization will be done elsewhere.
Merge branch 'master' into kai-branch
Fixed speed issue with build_problem. Added lookup table methods in model class.
Merge branch 'master' into kai-branch
Fixed speed issue in other methods using lookup tables. Tables are now OrderedDicts.
Merge branch 'master' into kai-branch