Update README.md

README.md

@@ -8,6 +8,7 @@ An R package to load, explore, and work with the Episodes of Regime Transformati
 #### Load, explore, and work with the ERT dataset (for details see also the [ERT Codebook](https://github.com/vdeminstitute/ERT/blob/master/inst/ERT_codebook.pdf)): ####
 
 * NOTE: for non-R users we provide [the ERT dataset here as csv. file](https://github.com/vdeminstitute/ERT/blob/master/inst) - however, we recommend loading the ERT dataset via the package since one huge advantage of the package is that it allows to flexibly set parameters for generating the episodes.
+* RELEASES: ERT 3.0 is based on the V-Dem dataset v11.1. For earlier releases using earlier versions of the V-Dem dataset, see the "Releases" column on the right sight. 
 
 #### Functions ####
 * `get_eps`: Identify episodes of regime transitions (autocratization, democratization) in the most recent V-dem data set. Autocratization is defined as any movement towards autocracy which starts within democracies or autocracies [(cf. Lührmann and Lindberg, Democratization, 2019)](https://www.tandfonline.com/doi/full/10.1080/13510347.2019.1582029). Democratization is defined as any movement towards democracy which starts in autocracies or democracies [(cf. Wilson et al., 2020)](https://www.v-dem.net/media/filer_public/40/01/40014eba-6f42-467c-b693-15221e210415/wp_97_final.pdf)