chore(changelog): update changes

CHANGELOGv2.md

@@ -12,8 +12,24 @@ branch is ready for merging.
 
 ### Added
 
+- Added a new command `openapi2kong` that will generate a deck file from an OpenAPI
+  3.0 spec. This is the replacement for the similar `inso` functionality.
+  The functionality is imported from the [go-apiops library](https://github.com/Kong/go-apiops).
+  [#939](https://github.com/Kong/deck/pull/939)
+- Added a new command `merge` that will merge multiple deck files. The files will not be
+  validated, which allows for working with incomplete or even invalid files in a pipeline.
+  The functionality is imported from the [go-apiops library](https://github.com/Kong/go-apiops).
+  [#939](https://github.com/Kong/deck/pull/939)
+- Added a new command `patch` for applying patches on top of a decK file. The patches can be
+  provided on the commandline, or via patch files. The deck file will not be
+  validated, which allows for working with incomplete or even invalid files in a pipeline.
+  The functionality is imported from the [go-apiops library](https://github.com/Kong/go-apiops).
+  [#939](https://github.com/Kong/deck/pull/939)
 
 ### Fixes
 
 
 ### Misc
+
+
+[v2.0.0]: https://github.com/kong/deck/compare/main...v2