We've recently introduced the configuration versioning management in transformations: http://status.keboola.com/transformation-versions-management
Now we've added a diff feature which allows comparisons of two adjacent versions, i,e., the differences between two configuration updates. For example, the user can now track and compare changes of sql queries in their transformations or changes in other parameters(input/output mapping).
Moreover, we extendeded this feature to other components such as all database extractors, all generic components and more are coming soon..
Feel free to try it and let us know how you like it :)