--- a/docs/HISTORY.txt	Mon Nov 19 14:50:38 2018 +0100
+++ b/docs/HISTORY.txt	Tue Nov 20 09:08:25 2018 +0100
@@ -1,6 +1,11 @@
 History
 =======
 
+0.1.23
+------
+ - skip directories and empty files in ZIP archives
+ - changed thumbnails sharpen filter to use unsharp mask
+
 0.1.22
 ------
  - added banner thumbnail