- Updated the solution.py to create a solution class.

…o contrib package

- Combined var_utils.py with aos_utils.py

- Working on obbt and solution pool code and tests

- Removed old files
- Updated test cases

- Updates tests cases with some new tests and some TODOs

…nd problem and found the extreme points and domain for a particular objective constraint

…itial development of code needed to put an LP in standard form.

- Create an initial working version of the lp_enum code.

…in the shifted_lp.py code.

…d in shifted_lp.py

…ist instead of named constraints and updated associated tests

1. Exposing the logcontext class.

2. Adding warnings and debugging information for the balas function.  In
particular, this method now warns if no binary variables are found.

3. Reworking balas example to work with knapsack.

When the warmstart option is not supported by a solver

…to throw its own error

- Updated checks to make sure only an LP is passed

…for the component