Docs: corrected previous release notes entry (via PR kedro-org#266, r…

…elated to issue kedro-org#256. Added new release notes entry for PR kedro-org#268, related to issue kedro-org#265

RELEASE.md

@@ -5,6 +5,8 @@
 ## Bug fixes and other changes
 * Fixed a bug where a new version created mid-run by an external system caused inconsistencies in the load versions used in the current run.
 * Documentation improvements.
+* Updated contribution process in `CONTRIBUTING.md` - added Developer Workflow
+* Added facility to create an isolated Kedro development environment with the help of Docker containers
 
 ## Breaking changes to the API
 * Made `invalidate_cache` method on datasets private.
@@ -14,6 +16,7 @@
 
 ## Thanks for supporting contributions
 [@foolsgold](https://github.com/foolsgold)
+[Mani Sarkar](https://github.com/neomatrix369)
 
 # 0.15.7
 
@@ -24,12 +27,10 @@
 ## Bug fixes and other changes
 
 * Fixed the link to the Kedro banner image in the documentation.
-* Updated contribution process in `CONTRIBUTING.md` - added Developer Workflow
 
 ## Breaking changes to the API
 
 ## Thanks for supporting contributions
-[Mani Sarkar](https://github.com/neomatrix369)
 
 # 0.15.6