[Semantic Versioning]: http://semver.org/
## Unreleased
+
+## 0.4.0 - 2020-05-26
### Added
- 3D grid extension.
- Uniform sampling. (Normal sampling is still default.)
+- Compound extensions 18 - 33.
+- Path optimization in backward direction.
+- Goal found check for zone instead of Euclidean distance and max. angle
+ extension.
+
+### Changed
+- Reformat lists in readme.
+- Add `RRTExt3` to compound extensions 18 - 33.
## 0.3.1 - 2020-01-03
### Fixed