Bump to v3.4.0.

internal/baseIndexOf.js

@@ -6,14 +6,14 @@ import indexOfNaN from './indexOfNaN';
  * @private
  * @param {Array} array The array to search.
  * @param {*} value The value to search for.
- * @param {number} [fromIndex=0] The index to search from.
+ * @param {number} fromIndex The index to search from.
  * @returns {number} Returns the index of the matched value, else `-1`.
  */
 function baseIndexOf(array, value, fromIndex) {
   if (value !== value) {
     return indexOfNaN(array, fromIndex);
   }
-  var index = (fromIndex || 0) - 1,
+  var index = fromIndex - 1,
       length = array.length;
 
   while (++index < length) {