updated CHANGELOG.md to reflect the changes on the new version.

Author: Socrats

CHANGELOG.md

@@ -5,6 +5,28 @@ 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).
 
+## [0.1.9] - 18-01-2022
+
+### Added
+
+- Added `plot_replicator_dynamics_in_simplex` and `plot_moran_dynamics_in_simplex` to simplify the plotting of 2
+  Simplexes when using `replicator_equation` and `StochDynamics` provided in `egttools`.
+- Added an extra example to the docs to showcase the simplified plotting.
+
+### Fixed
+
+- Fixed wrong numpy use in `egttools.utils.calculate_stationary_distribution`. Instead of `numpy.eig` the correct use
+  is `numpy.linalg.eig`.
+- Fixed issue with plotting edges which have random drift.
+  Before `egttools.plotting.helpers.calculate_stationary_points` would logically find many roots in an edge with random
+  drift and `Simplex2D.draw_stationary_points` would attempt to draw all of them. Now, we first search of edges in which
+  there is random drift, and mask them, so that no stationary points nor trajectories are plot in the edge. Instead, we
+  draw a `dashed` line to represent the random drift.
+
+### Changed
+
+- Updated `Readme.md` to use the simplified `plot_replicator_dynamics_in_simplex` in the example of 2 Simplex plotting.
+
 ## [0.1.8] - 15-01-2022
 
 ### Added

src/version.h

@@ -18,6 +18,6 @@
 #ifndef EGTTOOLS_VERSION_H
 #define EGTTOOLS_VERSION_H
 
-#define EGTTOOLS_VERSION 0.1.8.dev1
+#define EGTTOOLS_VERSION 0.1.9.dev1
 
 #endif//EGTTOOLS_VERSION_H