ivigit.
Added an initial active set.
Added an initial active set into the Stage class.
IVIGIT unittest.
Minor compilation correctyion.
Added a new random generator.
IHQP test update.
Added documentation in the tmanu cone test.
Added a correction of the COD (used only in the test) in CODClean. This file should replace the src/COD.hpp, which is yet kept for laziness reasons.
Removed useless include in tmanu.