+WHAT'S NEW in version 2.3.4 (2014-02-11)
+
+ Optimize recursive decoding.
+
+ Fix a bug - decode message/rfc822 subparts.
+
+WHAT'S NEW in version 2.3.3 (2014-02-02)
+ Forbid filtering from console. When the program runs with stdin
+ connected to the console it shows usage help.
+
+ Fix a bug - option -o and no parameters.
+