IsitaRex

Closes #54 ## Changes On the multipliers module we created a new class called [cooper.multipliers.MultiplierModel](https://github.com/IsitaRex/cooper/blob/ff3d9e27f0d42ffb64c907a4486f1a74f57d8910/cooper/multipliers/multiplier_model.py), which predicts the value of the Lagrange multipliers associated with the equality or inequality constraints...