making it a non-breaking change

Author: KneupnerTrackunit

Sources/SwiftGraph/Graph.swift

@@ -39,6 +39,11 @@ extension Graph {
     public var edgeCount: Int {
         return edges.joined().count
     }
+    
+    @available(*, deprecated, renamed: "addEdge", message: "Use the addEdge method without the additional directed parameter instead, as the Edge contains already the information about direction. A double specification can only result in inconsistencies and errors.")
+    func addEdge(_ e: E, directed: Bool = false){
+        addEdge(e)
+    }
 
     /// Returns a list of all the edges, undirected edges are only appended once.
     public func edgeList() -> [E] {