Update change logs for releases.

Author: bicknellr

packages/custom-elements/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [1.6.0] - 2023-03-30
 
 - Add support for `Element.toggleAttribute()` ([#541](https://github.com/webcomponents/polyfills/pull/541))
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))

packages/html-imports/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [1.3.1] - 2023-03-20
 
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 

packages/scoped-custom-element-registry/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [0.0.9] - 2023-03-30
 
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 

packages/shadycss/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [1.11.2] - 2023-03-30
 
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 

packages/shadydom/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [1.11.0] - 2023-03-30
 
 - Add support for `Element.toggleAttribute()` ([#541](https://github.com/webcomponents/polyfills/pull/541))
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))

packages/template/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## Unreleased
+<!-- ## Unreleased -->
+
+## [1.5.1] - 2023-03-30
 
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 

packages/url/CHANGELOG.md

@@ -5,7 +5,9 @@ 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).
 
-## [Unreleased]
+<!-- ## [Unreleased] -->
+
+## [0.7.9] - 2023-03-30
 
 - Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 

packages/webcomponentsjs/CHANGELOG.md

@@ -6,10 +6,11 @@ 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).
 
-## [Unreleased]
+<!-- ## [Unreleased] -->
 
-- Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
+## [2.8.0] - 2023-03-30
 
+- Update dependencies ([#542](https://github.com/webcomponents/polyfills/pull/542))
 - Polyfill `Element.toggleAttribute()`. ([#541](https://github.com/webcomponents/polyfills/pull/541))
 
 ## [2.7.0] - 2022-10-20