update changelog for v2.7.0

Author: VirginiaBalseiro

CHANGELOG.md

@@ -4,12 +4,16 @@ This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html
 
 ## Unreleased
 
-## 2.6.1
+## 2.7.0 ( January 20, 2022 )
 
 ### New features
 
 - The `Image` component now takes an optional prop `allowDelete`, which renders a default delete button that will remove the value from the dataset. It is also possible to pass a `deleteComponent` to render a custom delete button in place of the default. 
 
+## 2.6.1
+
+### New features
+
 - The `Image` component now allows for a new image to be saved even if the property is not found in the dataset, by passing a `solidDataset` where the Thing should be set after updating, and a `saveLocation` where the image file should be stored. 
 
 ### Bugfixes