manual: Add Maximum Flow.

manual.scrbl

@@ -197,6 +197,11 @@ Graph properties are not supported.
 @defproc[(order-smallest-last [g Graph]) (Listof Any)]{}
 @defproc[(valid-coloring? [g Graph] [coloring (HashTable Any Number)]) Boolean]{}
 
+@subsection{Maximum Flow}
+@defproc[(maxflow [g Graph] [source Any] [sink Any]) (HashTable (List Any Any) Number)]{}
+@defproc[(bipartite? [g Graph]) (U (List (Listof Any) (Listof Any)) False)]{}
+@defproc[(maximum-bipartite-matching [g Graph]) (Listof (List Any Any))]
+
 @section{License}
 
 Like the generic graph library, this library is licensed under the Apache