Update CHANGELOG for version 1.0.0-rc.4

CHANGELOG.md

@@ -3,6 +3,10 @@ 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).
 
+## [1.0.0-rc.4][1.0.0-rc.4] - 2021-11-02
+
+- Add README and release notes (link to https://github.com/serilog-contrib/serilog-formatting-log4net/blob/main/CHANGELOG.md) in the NuGet package
+
 ## [1.0.0-rc.3][1.0.0-rc.3] - 2021-10-25
 
 - Replace `UseLog4NetXmlNamespace(null)` with `UseNoXmlNamespace()`
@@ -59,6 +63,7 @@ Still trying to figure out how to make everything fit together with [MinVer](htt
 
 - Implement log4j compatibility mode.
 
+[1.0.0-rc.4]: https://github.com/serilog-contrib/serilog-formatting-log4net/compare/1.0.0-rc.3...1.0.0-rc.4
 [1.0.0-rc.3]: https://github.com/serilog-contrib/serilog-formatting-log4net/compare/1.0.0-rc.2...1.0.0-rc.3
 [1.0.0-rc.2]: https://github.com/serilog-contrib/serilog-formatting-log4net/compare/1.0.0-rc.1...1.0.0-rc.2
 [1.0.0-rc.1]: https://github.com/serilog-contrib/serilog-formatting-log4net/compare/1.0.0-alpha.0.110...1.0.0-rc.1