fill out the FuzzyMap API to match Map

kiss/src/kiss/FuzzyMap.hx

@@ -4,7 +4,7 @@ import haxe.ds.StringMap;
 
 using hx.strings.Strings;
 
-// TODO forward and implement the full Map API
+@:forward(clear, copy, iterator, keyValueIterator, keys, toString)
 abstract FuzzyMap<T>(StringMap<T>) from StringMap<T> to StringMap<T> {
     public inline function new(?m:StringMap<T>) {
         this = if (m != null) m else new StringMap<T>();
@@ -60,6 +60,10 @@ abstract FuzzyMap<T>(StringMap<T>) from StringMap<T> to StringMap<T> {
         return this.remove(key);
     }
 
+    public inline function exists(fuzzySearchKey:String):Bool {
+        return bestMatch(fuzzySearchKey, false) != null;
+    }
+
     @:arrayAccess
     public inline function set(key:String, v:T):T {
         this.set(key, v);