Docs: Add a missing changelog entry for the point where the `$tagnames` parameter was added to `get_shortcode_regex()`.

Props keesiemeijer.
Fixes #38914.

Built from https://develop.svn.wordpress.org/trunk@39351


git-svn-id: http://core.svn.wordpress.org/trunk@39291 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/shortcodes.php

@@ -244,10 +244,11 @@ function do_shortcode( $content, $ignore_html = false ) {
  * 6 - An extra ] to allow for escaping shortcodes with double [[]]
  *
  * @since 2.5.0
+ * @since 4.4.0 Added the `$tagnames` parameter.
  *
  * @global array $shortcode_tags
  *
- * @param array $tagnames List of shortcodes to find. Optional. Defaults to all registered shortcodes.
+ * @param array $tagnames Optional. List of shortcodes to find. Defaults to all registered shortcodes.
  * @return string The shortcode search regular expression
  */
 function get_shortcode_regex( $tagnames = null ) {

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-beta4-39350';
+$wp_version = '4.7-beta4-39351';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.