Rebase to 2.5.7

readme.txt

@@ -4,7 +4,7 @@ Tags: footnote, footnotes, bibliography, formatting, notes, Post, posts, referen
 Requires at least: 3.9
 Tested up to: 5.6.1
 Requires PHP: 5.6
-Stable Tag: 2.5.6
+Stable Tag: 2.5.7
 License: GPLv3 or later
 License URI: http://www.gnu.org/licenses/gpl-3.0.html
 
@@ -77,6 +77,9 @@ Visit this swift write-up from a **footnotes** user by the name of **Southwest**
 
 == Changelog ==
 
+= 2.5.7 =
+- Bugfix: Process: fix footnote duplication by emptying the footnotes list every time the search algorithm is run on the content, thanks to @inoruhana bug report.
+
 = 2.5.6 =
 - Bugfix: Reference container: optional alternative expanding and collapsing without jQuery for use with hard links, thanks to @hopper87it @pkverma99 issue reports.
 - Bugfix: Alternative tooltips: shrink width to short content.