Some updates

[torressa]

Hey man, I've changed around some stuff, have a look.
Maybe I'm wrong in thinking that test_sub_cspy and test_sub_pulp solve the same problem?
Also was thinking to make the subproblems into classes that way we can subdivide the problem specific parts and the common parts.
Also, sorry for slight reformatting.

[torressa]

Not sure about the integration tests either..

[torressa]

I've restrured the subproblem lp in a new file. See what you think.
I was having trouble understanding what problem was actually being formulated so I removed the hard-coded bits and made it a bit more generic, so you can input the load, duration, etc

[torressa]

The idea would be to do the same for the subproblem using cspy.
The SubProblemcspy class inherits from subproblem base and depending on the inputs, it sets different resource bounds.