Fix scipy warnings - Optimal transport and LP intro

[Smit-create]

Fixes #321

[github-actions]

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[mmcky]

thanks @Smit-create I have noticed the output is now different and doesn't say Optimization terminated successfully. Is this b/c the output from the package has changed?

[Smit-create]

Is this b/c the output from the package has changed?

The method used in the backend is changed now to highs which previously was revised simplex. So, I guess the logs were method specific, but I can see this message in the output:

           con: array([0., 0., 0.])
 crossover_nit: 0
         eqlin:  marginals: array([ 75072.24525694,   4648.8252293 , -20000.        ])
  residual: array([0., 0., 0.])
           fun: 141018.2434979269
       ineqlin:  marginals: array([-24927.75474306, -50000.        ])
  residual: array([0., 0.])
         lower:  marginals: array([0., 0., 0., 0., 0., 0., 0.])
  residual: array([       inf,        inf,        inf,        inf,        inf,
              inf, 0.00147003])
       message: 'Optimization terminated successfully. (HiGHS Status 7: Optimal)'
           nit: 0
         slack: array([0., 0.])
        status: 0
       success: True
         upper:  marginals: array([     0.        ,      0.        ,      0.        , -95072.24525694,
       -24648.8252293 ,      0.        ,      0.        ])
  residual: array([       inf,        inf,        inf, 0.        , 0.        ,
       0.16502827,        inf])
             x: array([ 1.37644176,  1.29852997,  1.22502827,  0.        ,  0.        ,
       -0.16502827,  0.00147003])

[mmcky]

Oh I can see it now about half way down. It used to be much cleaner output :-)

[mmcky]

thanks @Smit-create this is looking good to me.