2.13.0 readiness

Updates the CHANGELOG.md to set the release date.

CHANGELOG.md

@@ -2,27 +2,36 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.13.0 - TBD
+## 2.13.0 - 2021-01-26
 
-### Added
 
-- Nothing.
+-----
 
-### Changed
+### Release Notes for [2.13.0](https://github.com/laminas/laminas-mail/milestone/4)
 
-- Nothing.
 
-### Deprecated
 
-- Nothing.
+### 2.13.0
 
-### Removed
+- Total issues resolved: **1**
+- Total pull requests resolved: **6**
+- Total contributors: **6**
 
-- Nothing.
+#### Bug
 
-### Fixed
+ - [129: Tests: Resolve duplicate data provider key](https://github.com/laminas/laminas-mail/pull/129) thanks to @glensc
+ - [125: Merge release 2.12.5 into 2.13.x](https://github.com/laminas/laminas-mail/pull/125) thanks to @github-actions[bot]
 
-- Nothing.
+#### Duplicate,Enhancement
+
+ - [127: phpunit9 and php8](https://github.com/laminas/laminas-mail/pull/127) thanks to @delboy1978uk
+
+#### Enhancement
+
+ - [117: Add PHP 8.0 support](https://github.com/laminas/laminas-mail/pull/117) thanks to @bfoosness
+ - [109: Code style fixes in tests](https://github.com/laminas/laminas-mail/pull/109) thanks to @glensc
+ - [101: Fixes #34 replace call_user_func* with self invoked function](https://github.com/laminas/laminas-mail/pull/101) thanks to @samsonasik
+ - [34: replace call_user_func* with self invoked function](https://github.com/laminas/laminas-mail/issues/34) thanks to @michalbundyra
 
 ## 2.12.5 - 2020-12-31