Breakdance includes undo & redo for actions performed in the builder. You can find the undo & redo controls near the top right of the interface.
The back arrow icon will undo the most recent action. The right arrow icon will allow you to move forward through actions after you have undone at least one action.
If you need to go beyond simple undo & redo, you can access a deeper history of changes under Settings (…) > History.
There, you’ll find two tabs: