Update README, changelog and setup.py

Author: j4321

README.rst

@@ -115,6 +115,9 @@ Documentation
 Changelog
 ---------
 
+- tkfilebrowser 2.2.1
+    * Fix ValueError in after_cancel with Python 3.6.5
+
 - tkfilebrowser 2.2.0
     * Use babel instead of locale in order not to change the locale globally
     * Speed up (a little) folder content display

changelog

@@ -6,6 +6,9 @@ Copyright 2017 Juliette Monsel <j_4321@protonmail.com>
 Changelog
 ---------
 
+- tkfilebrowser 2.2.1
+    * Fix ValueError in after_cancel with Python 3.6.5
+
 - tkfilebrowser 2.2.0
     * Use babel instead of locale in order not to change the locale globally
     * Speed up (a little) folder content display

setup.py

@@ -12,7 +12,7 @@
     long_description = f.read()
 
 setup(name='tkfilebrowser',
-      version='2.2.0',
+      version='2.2.1',
       description='File browser for Tkinter, alternative to tkinter.filedialog in linux with GTK bookmarks support.',
       long_description=long_description,
       url='https://github.com/j4321/tkFileBrowser',