Update README.md

Author: giuseppec

README.md

@@ -1,9 +1,5 @@
 # R interface to [OpenML.org](http://www.openml.org/) 
 
-
-> [!IMPORTANT]  
-> This package is superseded by [mlr3oml](https://github.com/mlr-org/mlr3oml).
-
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 [![Rdoc](http://www.rdocumentation.org/badges/version/OpenML)](http://www.rdocumentation.org/packages/OpenML)
 [![CRAN Status Badge](http://www.r-pkg.org/badges/version/OpenML)](http://cran.r-project.org/web/packages/OpenML)
@@ -23,6 +19,11 @@ For more information, have a look at our
 - <a href="http://dx.doi.org/10.1007/s00180-017-0742-2" target="_blank">OpenML R Package Publication</a>
 - <a href="https://www.openml.org/api_docs" target="_blank">OpenML API Guide</a>
 
+# [!important]
+
+This package is based on [mlr](https://github.com/mlr-org/mlr) which itself is considered retired due to the newer [mlr3](https://mlr3.mlr-org.com/) package. 
+We suggest to use the new mlr3 framework from now on and the related package [mlr3oml](https://github.com/mlr-org/mlr3oml) to access information from OpenML.
+
 # How to cite
 
 To cite the OpenML R package in publications, please use our paper entitled <a href="http://dx.doi.org/10.1007/s00180-017-0742-2" target="_blank">`OpenML`: An `R` Package to Connect to the Machine Learning Platform `OpenML`</a> [<a href="https://citation-needed.springer.com/v2/references/10.1007/s00180-017-0742-2?format=bibtex&flavour=citation" target="_blank">BibTex</a>]