Prepare to release 5.1.0

Author: colinodell

CHANGELOG.md

@@ -4,6 +4,8 @@ Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) princip
 
 ## [Unreleased][unreleased]
 
+## [5.1.0] - 2022-03-02
+
 ### Changed
 
  - Changed horizontal rule style (#218, #219)
@@ -313,7 +315,8 @@ not ideally set, so this releases fixes that. Moving forwards this should reduce
 ### Added
  - Initial release
 
-[unreleased]: https://github.com/thephpleague/html-to-markdown/compare/5.0.2...master
+[unreleased]: https://github.com/thephpleague/html-to-markdown/compare/5.1.0...master
+[5.1.0]: https://github.com/thephpleague/html-to-markdown/compare/5.0.2...5.1.0
 [5.0.2]: https://github.com/thephpleague/html-to-markdown/compare/5.0.1...5.0.2
 [5.0.1]: https://github.com/thephpleague/html-to-markdown/compare/5.0.0...5.0.1
 [5.0.0]: https://github.com/thephpleague/html-to-markdown/compare/4.10.0...5.0.0

composer.json

@@ -45,7 +45,7 @@
     "bin": ["bin/html-to-markdown"],
     "extra": {
         "branch-alias": {
-            "dev-master": "5.1-dev"
+            "dev-master": "5.2-dev"
         }
     },
     "config": {