What's Changed * Optimize memory usage in empirical_cross_covariance calculation by dafeda in https://github.com/equinor/iterative_ensemble_smoother/pull/214
What's Changed * Add more papers to LITERATURE.md by tommyod in https://github.com/equinor/iterative_ensemble_smoother/pull/202 * Update docstring explaining direct inversion by dafeda in https://github.com/equinor/iterative_ensemble_smoother/pull/207 * Create CODE_OF_CONDUCT.md by eivindjahren in https://github.com/equinor/iterative_ensemble_smoother/pull/210 * Upgrade ci versions by eivindjahren in https://github.com/equinor/iterative_ensemble_smoother/pull/209 * Remove grouping trick by dafeda in https://github.com/equinor/iterative_ensemble_smoother/pull/205