Update changelog

Author: tboby

CHANGELOG.md

@@ -1,10 +1,27 @@
 # Changelog
 
-## Unreleased
+## [Unreleased]
+
+### Added
+
+* Warnings when the `<ChangelogFile>` property is not set, or when the specified file cannot be found
+* Automatic pre-release version bumping when an `Unreleased` section is found, which increments the patch version of the latest release and adds the "-alpha" suffix
+* Added a property `<GenerateVersionForUnreleasedChanges>` which can be set to `false` to prevent automatic version bumping
+* Added an output property `UnreleasedReleaseNotes` containing the contents of the `Unreleased` section
+
+### Changed
+
+* No longer automatically use a `CHANGELOG.md` file, the path to the changelog must not be specified with the `<ChangelogFile>` property
+* Swapped to using the `KeepAChangelogParser` package for parsing
 
 ### Fixed
 
 * Fix bundled dependencies into the package for net6.0
+* Support for use in Visual Studio
+
+### Removed
+
+* Removed the Ionide.KeepAChangelog parser package
 
 ## [0.2.0] - 2023.12.05