Further documentation updates.

gui/Changelog.txt

@@ -1,6 +1,17 @@
 Scyther changelog
 ===============================
 
+Scyther 1.2
+-------------------------------
+
+This release mostly serves to modernize the dependencies and simplify install
+on modern versions of the three supported platforms.
+
+ * Updated python code to use Python 3, dropping the Python 2 requirement.
+ * [Gui] Updated to support (and require) wxPython 4.0 or later.
+ * Updated install instructions.
+ * Updated copyright notices.
+
 Scyther 1.1.2
 -------------------------------
 

gui/INSTALL.md

@@ -24,8 +24,7 @@ from the command line) then you need only the first.
 
   	http://www.python.org/download/
 
-  Scyther does not support Python 3. You are therefore recommended to
+  Scyther requires **Python 3** now, and no longer supports Python 2. 
-  choose the latest production release of Python 2, e.g., Python 2.7.
 
   *	**Mac OS X**
   

gui/README.md

@@ -45,11 +45,15 @@ availabe from
 Manual
 ------
 
-We are currently rewriting the manual. The current (incomplete)
+The manual is lagging behind. The current (incomplete)
 distribution version of the manual can be found here:
 
   * [./scyther-manual.pdf](scyther-manual.pdf)
 
+However, have a look at the book if you are interested:
+
+  * [https://doi.org/10.1007/978-3-540-70545-1_38](Our book on security protocols and the theory behind Scyther)
+
 
 Protocol Models
 ---------------