[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
+- Double value in unsigned int constant.
+
+## 0.3.0 - 2020-01-03
### Added
- Collision detection based on [cute c2][].
- Time restriction for algorithm.
- Dijkstra algorithm for path optimization (`rrtext3.cc`).
- Grid based `nn` and `nv` methods (`rrtext4.cc`).
- Compound extensions.
-
-[cute c2]: https://github.com/RandyGaul/cute_headers/blob/master/cute_c2.h
+- JSON output.
+- Should continue method.
+- Deinit method -- get ready for planner reset.
+- JSON input.
+- JSON output.
+- 2D K-d tree extension.
+- 3D K-d tree extension.
### Changed
- How the algorithm is stopped - possible to choose from more options.
- Separate `store_node` procedure.
+- Grid constants used in `ext4`.
+- Some small refactoring.
+
+### Deprecated
+- `should_continue` method.
+
+[cute c2]: https://github.com/RandyGaul/cute_headers/blob/master/cute_c2.h
## 0.2.0 - 2019-09-26
### Added