Bump version to 0.4.0

Author: setzer22

egui_node_graph/Cargo.toml

@@ -4,7 +4,7 @@ description = "A helper library to create interactive node graphs using egui"
 homepage = "https://github.com/setzer22/egui_node_graph"
 repository = "https://github.com/setzer22/egui_node_graph"
 license = "MIT"
-version = "0.3.0"
+version = "0.4.0"
 keywords = ["ui", "egui", "graph", "node"]
 authors = ["setzer22"]
 edition = "2021"