Clarify versioning

Author: szarnyasg

README.md

@@ -21,6 +21,7 @@ To ensure that you are using compatible LDBC repositories, use the following tab
 | [Driver](https://github.com/ldbc/ldbc_snb_driver) | [`v0.3.3`](https://github.com/ldbc/ldbc_snb_driver/releases/tag/0.3.3) | [`dev`](https://github.com/ldbc/ldbc_snb_driver/tree/dev) |
 | [Implementations](https://github.com/ldbc/ldbc_snb_implementations) | [`stable`](https://github.com/ldbc/ldbc_snb_implementations/tree/stable) | [`dev`](https://github.com/ldbc/ldbc_snb_implementations/tree/dev) |
 
+The `stable` branches of the repositories correspond to the `v0.3.x`, and the `dev` branches correspond to the `v0.4.x` releases.
 ## Directory layout
 
 Multiple configuration files and scripts use [relative paths to address the data generator's directory](https://github.com/ldbc/ldbc_snb_implementations/search?q=ldbc_snb_datagen). Hence, it is recommended to clone the LDBC Data Generator and the LDBC implementations repositories next to each other and keep their original directory names. For example: