add district_winner_matrix() function #13
Merged
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This PR adds a function to find district winners (i.e. parties that got the most votes in a district).
district_winner_matrix(votes_matrix)
returns a corresponding logical matrix. A base implementation has been used with the winner-take-one method, now a public facing method is exported which might help with modelling and troubleshooting.Also, I clarified the
wto
docs that district winners need enough seats from the upper apportionment (brought up in #12). There is no change in behavior.