Custom weighting not working

[NelsonMaty]

Describe the bug
Asset allocation is equally weighted when no optimisation method is provided.

To Reproduce
Use the documented example for custom asset allocation.

portfolio = Engine(
      start_date = "2018-01-01",
      portfolio= ["BABA", "PDD", "KO", "AMD","^IXIC"], 
      weights = [0.1, 0.3, 0.15, 0.25, 0.2], #custom weights
)

Expected behavior
portfolio.weights equals to [0.1, 0.3, 0.15, 0.25, 0.2]

Actual behavior
portfolio.weights equals to [0.2, 0.2, 0.2, 0.2, 0.2]

[NelsonMaty]

I believe this issue was introduced on this PR: #35

[ssantoshp]

Hi ✋

Thanks for reporting this issue. I just fixed it, it should be fine now. It has been corrected in the 1.9.8 version of Empyrial :)

You can check it here: https://colab.research.google.com/drive/1dygKh3LsmBEtevSXLCG2h_8bvpSACbYt?usp=sharing

[NelsonMaty]

It's working perfectly, thanks!! 😄