Update CHANGELOG.md

Author: gkjohnson

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+### Fixed
+- Case where tiles that were outside of the camera frustum would be loaded with a higher priority.
+- Case where a single tiles renderer tiles would always be loaded with a higher priority.
+- Case where bounding boxes with one dimension of 0 would not compute the distance to camera correctly.
+
 ## [0.3.0] - 2021-07-24
 ### Added
 - `path-browserify` dependency explicitly rather than relying on implicit polyfills for `path` package.