bump version to 0.2.2

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "felimination"
 description = "This library contains some useful scikit-learn compatible classes for feature selection."
-version = "0.2.1"
+version = "0.2.2"
 keywords = ["feature selection", "scikit-learn", "machine learning"]
 authors = [
     { name = "Claudio Salvatore Arcidiacono", email = "[email protected]" }