CI: Fix appveyor, fetch Windows scipy wheels needed for tests
CI: Fix appveyor, fetch Windows scipy wheels needed for tests

tdhopper/lda-1,ariddell/lda-debian,ww880412/lda,ariddell/lda,ariddell/lda,ariddell/lda-debian,ariddell/lda,ariddell/lda-debian,tdhopper/lda-1,tdhopper/lda-1,hothHowler/lda,hothHowler/lda,hothHowler/lda,ww880412/lda,ww880412/lda