Add member format attributes list.

src/brmember-format.scm

@@ -78,6 +78,8 @@
 			      (sprintf "~A" (member-payments-total mr)))
 			     ((#\B) ; Current balance
 			      (sprintf "~A" (member-total-balance mr)))
+			     ((#\A) ; Flags (attributes) list
+			      (sprintf "~A" (brmember-flags mr)))
 			     ((#\~) "~"))
 			   resl))
 	       (loop (cdr fmtl)