docs: update changelog for pact-python/3.0.0

Author: JP-Ellis

CHANGELOG.md

@@ -6,6 +6,77 @@ All notable changes to this project will be documented in this file.
 <!-- markdownlint-disable emph-style -->
 <!-- markdownlint-disable strong-style -->
 
+## [pact-python/3.0.0] _2025-10-06_
+
+### 🚀 Features
+
+-   [**breaking**] Default to v4 specification
+    > Pact instances default to version 4 of the Pact specification (previously used version 3). This should be mostly backwards compatible, but can be reverted by using `with_specification("V3")`.
+-   Populate broker source from env
+
+### 🚜 Refactor
+
+-   _(ci)_ If statement
+
+### 🎨 Styling
+
+-   _(tests)_ Add sections
+
+### 📚 Documentation
+
+-   Update changelog for pact-python/3.0.0a1
+-   Add mascot
+-   Give mascot outline
+-   Set mascot width and height
+-   _(examples)_ Add requests and fastapi
+-   Generate llms.txt
+-   Update mkdocs material features
+-   Fix CI badge links
+-   Update matcher docs
+-   Improve matchers
+-   Improve generators
+-   Update for v3 and add migration guide
+
+### ⚙️ Miscellaneous Tasks
+
+-   _(ci)_ Remove spelling check
+-   _(examples)_ Minor improvements
+-   Store hatch venv in .venv
+-   Update mismatch repr
+-   Save mismatches before exiting the server
+-   _(examples)_ Remove old http example
+-   Fix sub-project git cliff config
+-   Hide import from traceback
+-   Fix flask integer coercion
+-   Add v3 matching rules test
+-   Add v4 matching rules tests
+-   _(ci)_ Add publish as completion dependency
+-   _(tests)_ Add generators to interaction defn
+-   _(tests)_ Test v3 generators
+-   _(test)_ Add v4 generators tests
+-   Re-add pytest rerunfailrure
+-   _(tests)_ Add v3 http generators
+-   Prefer prek over pre-commit
+-   Disable reruns in vscode
+-   _(ci)_ Fix prek caching
+-   _(ci)_ Generate junit xml files
+-   Move mascot file out of root
+-   Update uuid format names
+-   Fix import warning
+-   Make Unset falsey
+-   [**breaking**] Rename abstract matcher class
+    > The abstract `pact.match.Matcher` class has been renamed to `pact.match.AbstractMatcher`.
+-   [**breaking**] Rename abstract generator
+    > The abstract `pact.generate.Generator` class has been renamed to `pact.generate.AbstractGenerator`.
+-   Clarify explanation of given
+-   [**breaking**] Drop python 3.9 add 3.14
+    > Python 3.9 is no longer supported.
+-   _(ci)_ Disable 3.14 tests using pydantic
+
+### Contributors
+
+-   @JP-Ellis
+
 ## [pact-python/3.0.0a1] _2025-08-12_
 
 ### 🚀 Features
@@ -562,7 +633,6 @@ All notable changes to this project will be documented in this file.
 -   _(ci)_ Speed up wheels building on prs
 -   _(ci)_ Add caching
 -   Migrate from flat to src layout
--   _(docs)_ Update changelog
 -   _(ci)_ Automate release process
 -   _(v3)_ Add warning on pact.v3 import
 -   _(ci)_ Remove check of wheels
@@ -1517,4 +1587,4 @@ All notable changes to this project will be documented in this file.
 -   @matthewbalvanz-wf
 -   @mefellows
 
-<!-- generated by git-cliff on 2025-08-12-->
+<!-- generated by git-cliff on 2025-10-06-->