Add kdtree-rs

README.md

@@ -890,6 +890,7 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
 * [danielpclark/array_tool](https://github.com/danielpclark/array_tool) — Array helpers for Rust. Some of the most common methods you would use on Arrays made available on Vectors. Polymorphic implementations for handling most of your use cases. [<img src="https://api.travis-ci.org/danielpclark/array_tool.svg?branch=master">](https://travis-ci.org/danielpclark/array_tool)
 * [fizyk20/generic-array](https://github.com/fizyk20/generic-array) – a hack to allow for arrays sized by typenums [<img src="https://api.travis-ci.org/fizyk20/generic-array.svg?branch=master">](https://travis-ci.org/fizyk20/generic-array)
 * [garro95/priority-queue](https://github.com/garro95/priority-queue)[[priority-queue](https://crates.io/crates/priority-queue)] — A priority queue that implements priority changes. [<img src="https://api.travis-ci.org/garro95/priority-queue.svg?branch=master">](https://travis-ci.org/garro95/priority-queue)
+* [mrhooray/kdtree-rs](https://github.com/mrhooray/kdtree-rs) - K-dimensional tree in Rust for fast geospatial indexing and nearest neighbors lookup
 * [Nemo157/roaring-rs](https://github.com/Nemo157/roaring-rs) – Roaring Bitmaps in Rust [<img src="https://api.travis-ci.org/Nemo157/roaring-rs.svg?branch=master">](https://travis-ci.org/Nemo157/roaring-rs)
 * [orium/rpds](https://github.com/orium/rpds) [[rpds](https://crates.io/crates/rpds)] — Persistent data structures in Rust. [<img src="https://api.travis-ci.org/orium/rpds.svg?branch=master">](https://travis-ci.org/orium/rpds)
 * [pop-os/progress-streams](https://github.com/pop-os/progress-streams) — Progress callbacks for types which implement `dyn io::Read` or `dyn io::Write`.