* `gp`: Fix variance gradient computation by relf in <https://github.com/relf/egobox/pull/177>
0.21.0
* `ego`: * Implement [TREGO algorithm](https://arxiv.org/abs/2101.06808) by relf in <https://github.com/relf/egobox/pull/173> * Fix added point count in TREGO local step by relf in <https://github.com/relf/egobox/pull/174> * Fix WB2S criteria scaling factor and fmin computation by relf in <https://github.com/relf/egobox/pull/175> * Prepare release 0.21 by relf in <https://github.com/relf/egobox/pull/176>
0.20.0
* `gp`: * Save original parameters in trained `gp` models by relf in <https://github.com/relf/egobox/pull/166> * Implement cross validation metric for surrogates by relf in <https://github.com/relf/egobox/pull/167> * `ego`: * Make `n_optmod` option available in Python by relf in <https://github.com/relf/egobox/pull/161> * Better `Egor` solver state handling by relf in <https://github.com/relf/egobox/pull/168> * Refactor `ego` module by relf in <https://github.com/relf/egobox/pull/169> * Add dependabot cargo ecosystem check by relf in <https://github.com/relf/egobox/pull/163>
0.19.0
* `ego`: * Allow to reuse surrogate trainings (reuse previous hyperparameters) from a previous iteration by relf in <https://github.com/relf/egobox/pull/157> * Fix hot start mechanism due to bad loaded DOE exploitation by relf in <https://github.com/relf/egobox/pull/156> * Adjust log messages by relf in <https://github.com/relf/egobox/pull/158> * Log Egor configuration by relf in <https://github.com/relf/egobox/pull/159> * `gp`: * Allow fixed hyperparameters theta for GP and Sparse GP by relf in <https://github.com/relf/egobox/pull/155> * `egobox`: * Upgrade to pyo3 0.21 by relf in <https://github.com/relf/egobox/pull/152> * Upgrade dependencies by relf in <https://github.com/relf/egobox/pull/153>
0.18.1
* Fix GP mixture with kpls option on Griewank test function by relf in <https://github.com/relf/egobox/pull/150>
0.18.0
* [Breaking changes] `gp`, `moe`, `egobox` (Python): Rename `predict_derivatives()` as `predict_gradients()` by relf in <https://github.com/relf/egobox/pull/148>