feat: revert changes to a table

docs/roadmap.md

@@ -21,7 +21,6 @@ When features are requested, we will describe the work to be performed in the se
 The following features are currently requested:
 
 * Ability to set 'number of approvals' to zero, enabling instant updates (4 days)
-* Ability to restore previous versions
 * Ability to make automated submissions using an API
 
 
@@ -160,4 +159,15 @@ Our customer was ingesting Basel III reports into SAS and needed an easy to use
 
 We built an approach that allowed end users to define a series of rules for importing cells and ranges from anywhere within a workbook - based on absolute / relative positioning, or using search strings.
 
-The changes we made to deliver this feature are described [here](https://git.datacontroller.io/dc/dc/issues/69) and the final documentation is [here](/excel).
+The changes we made to deliver this feature are described [here](https://git.datacontroller.io/dc/dc/issues/69) and the final documentation is [here](/excel).
+
+
+### Restore Previous Versions
+
+It is now possible to restore any change by heading to the particular staged data screen and hitting the red REVERT button
+
+![](./img/revert.png)
+
+This will submit a NEW change (which must first be approved) that will revert the table to state it was in just prior to the selected upload.
+
+Note that Data Controller can only track (and revert) changes that are made using the Data Controller tool itself! It does not / cannot track changes made externally to a table, by other tools.