knn.info: Compute knn information
In donelsonsmith/umap_R: Uniform Manifold Approximation and Projection

This function determines whether to obtain knn information using an exact brute force approach or using an approximate algorithm

1	knn.info(d, config, brute.force = TRUE)

`d`	data matrix
`config`	list with settings; relevant settings are as follows: input - "data" or "dist" n.neighbors - number of neighbors k metric.function - function with signature f(a, b)
`brute.force`	logical, during development, set FALSE to force stochastic knn