Update package version

Author: nwoodruff-co

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), 
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.1] - 2025-11-17 11:45:43
+
+### Added
+
+- Policy and Dynamic classes now support addition operator (__add__) to combine policies and dynamics.
+- Parameter values are appended when combining policies/dynamics.
+- Simulation modifiers are chained in sequence when combining policies/dynamics.
+
 ## [3.1.0] - 2025-11-17 10:25:50
 
 ## [3.0.0] - 2025-09-23 08:43:22
@@ -195,6 +203,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 
+[3.1.1]: https://github.com/PolicyEngine/policyengine.py/compare/3.1.0...3.1.1
 [3.1.0]: https://github.com/PolicyEngine/policyengine.py/compare/3.0.0...3.1.0
 [3.0.0]: https://github.com/PolicyEngine/policyengine.py/compare/2.0.0...3.0.0
 [2.0.0]: https://github.com/PolicyEngine/policyengine.py/compare/1.0.0...2.0.0

changelog.yaml

@@ -157,3 +157,11 @@
   - Just basemodels, no sqlmodels.
   - Clean, working analysis at both household and macro level for uk and us.
   date: 2025-11-17 10:25:50
+- bump: patch
+  changes:
+    added:
+    - Policy and Dynamic classes now support addition operator (__add__) to combine
+      policies and dynamics.
+    - Parameter values are appended when combining policies/dynamics.
+    - Simulation modifiers are chained in sequence when combining policies/dynamics.
+  date: 2025-11-17 11:45:43

changelog_entry.yaml

@@ -1,6 +0,0 @@
-- bump: patch
-  changes:
-    added:
-    - Policy and Dynamic classes now support addition operator (__add__) to combine policies and dynamics.
-    - Parameter values are appended when combining policies/dynamics.
-    - Simulation modifiers are chained in sequence when combining policies/dynamics.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "policyengine"
-version = "3.1.0"
+version = "3.1.1"
 description = "A package to conduct policy analysis using PolicyEngine tax-benefit models."
 readme = "README.md"
 authors = [