Add changelog entries for #50 and #51

prehner · prehner · commit 3cc37576b10b · 2022-04-06T17:05:43.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added conversions between `ParameterError` -> `EosError` and `EosError` -> `FitError` to improve the error messages in some cases. [#40](https://github.com/feos-org/feos-core/pull/40)
 - Added new struct `StateVec`, that gives easy access to properties of lists of states, e.g. in phase diagrams. [#48](https://github.com/feos-org/feos-core/pull/48)
+- Added `ln_symmetric_activity_coefficient` and `ln_phi_pure` to the list of state properties that can be calculated. [#50](https://github.com/feos-org/feos-core/pull/50)
 
 ### Changed
 - Removed `State` from `EntropyScaling` trait and adjusted associated methods to use temperature, volume and moles instead of state. [#36](https://github.com/feos-org/feos-core/pull/36)
@@ -33,7 +34,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `PhaseDiagramBinary::new_txy_lle`, `PhaseDiagramBinary::new_pxy_lle` -> `PhaseDiagram::lle`
   - `PhaseDiagramHetero::new_txy`, `PhaseDiagramHetero::new_pxy` -> `PhaseDiagram::binary_vlle`\
   which still returns an instance of `PhaseDiagramHetero`
-
+- Changed the internal implementation of the Peng-Robinson equation of state to use contributions like the more complex equations of state and removed the suggestion to overwrite the `evaluate_residual` function of `EquationOfState`. [#51](https://github.com/feos-org/feos-core/pull/51)
 
 ### Packaging
 - Updated `pyo3` and `numpy` dependencies to 0.16.
