Optimize module to-do list

[mfkasim1]

• [ ] rootfinder and equilibrium (can take a look at SciPy, good first issue):
  • [x] (method="broyden1")
  • [x] (method="broyden2")
  • [x] (method="anderson")
  • [ ] (method="diagbroyden")
  • [x] (method="linearmixing")
  • [ ] (method="excitingmixing")
  • [ ] (method="krylov")
• [ ] minimize
  • [x] (method="gd") (vanilla gradient descent)
  • [ ] (method="lbfgs")
  • [ ] (method="cg")
• [ ] mincon (constrained optimization: min f(x,p) s.t. g(x,q) = 0)

[iffanh]

Working on "anderson" method of rootfinder now