Altered the transform function to use the new bipartite option in compute_membership_strength.  The old code had the bug that if the ith new_point was nearest neighbours of the ith old point their membership strength would be set to 0.
Altered the transform function to use the new bipartite option in compute_membership_strength.  The old code had the bug that if the ith new_point was nearest neighbours of the ith old point their membership strength would be set to 0.

lmcinnes/umap,lmcinnes/umap