Allow _.flow and _.flowRight to accept an array of functions.

lodash.js

@@ -3871,23 +3871,26 @@
      * @returns {Function} Returns the new flow function.
      */
     function createFlow(fromRight) {
-      return function() {
-        var wrapper,
-            length = arguments.length,
-            index = fromRight ? length : -1,
-            leftIndex = 0,
-            funcs = Array(length);
+      return rest(function(funcs) {
+        funcs = baseFlatten(funcs);
 
-        while ((fromRight ? index-- : ++index < length)) {
-          var func = funcs[leftIndex++] = arguments[index];
+        var length = funcs.length,
+            index = length,
+            prereq = LodashWrapper.prototype.thru;
+
+        if (fromRight) {
+          funcs.reverse();
+        }
+        while (index--) {
+          var func = funcs[index];
           if (typeof func != 'function') {
             throw new TypeError(FUNC_ERROR_TEXT);
           }
-          if (!wrapper && LodashWrapper.prototype.thru && getFuncName(func) == 'wrapper') {
-            wrapper = new LodashWrapper([], true);
+          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
+            var wrapper = new LodashWrapper([], true);
           }
         }
-        index = wrapper ? -1 : length;
+        index = wrapper ? index : length;
         while (++index < length) {
           func = funcs[index];
 
@@ -3915,7 +3918,7 @@
           }
           return result;
         };
-      };
+      });
     }
 
     /**