Bump version from 2.1.1 to 2.2.0

Author: josephdviviano

pyproject.toml

@@ -8,7 +8,7 @@ name = "torchgfn"
 [tool.poetry]
 name = "torchgfn"
 packages = [{include = "gfn", from = "src"}]
-version = "2.1.1"
+version = "2.2.0"
 description = "A torch implementation of GFlowNets"
 authors = ["Salem Lahlou <[email protected]>", "Joseph Viviano <[email protected]>", "Victor Schmidt <[email protected]>"]
 license = "MIT"