Clean up boolean highlighting

CHANGES.txt

+Revision 3.3.4 (2013-08-11):
+
+    - Highlight True and False as booleans. Patch by Yuri Habrusiev.
+
 Revision 3.3.3 (2013-06-02):
 
    - More lightweight syntax reloading. Patch by Will Gray.

README.rst

 - Marc Weber
 - Pedro Algarvio
 - Will Gray
+- Yuri Habrusiev

syntax/python.vim

 " Language:     Python
 " Maintainer:   Dmitry Vasiliev <dima at hlabs dot org>
 " URL:          https://github.com/hdima/python-syntax
-" Last Change:  2013-06-02
+" Last Change:  2013-08-11
 " Filenames:    *.py
-" Version:      3.3.3
+" Version:      3.3.4
 "
 " Based on python.vim (from Vim 6.1 distribution)
 " by Neil Schemenauer <nas at python dot ca>
 "   Marc Weber
 "   Pedro Algarvio
 "   Will Gray
+"   Yuri Habrusiev
 "
 " Options
 " =======
   syn keyword pythonPreCondit   as
   syn match   pythonFunction    "[a-zA-Z_][a-zA-Z0-9_]*" display contained
 else
-  syn keyword pythonStatement   as nonlocal
-  syn keyword pythonBoolean     True False None
+  syn keyword pythonStatement   as nonlocal None
+  syn keyword pythonBoolean     True False
   syn match   pythonFunction    "\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*" display contained
 endif
 
 
 if s:Enabled("g:python_highlight_builtin_objs")
   if s:Python2Syntax()
-    syn keyword pythonBuiltinObj	True False None
+    syn keyword pythonBuiltinObj	None
+    syn keyword pythonBoolean		True False
   endif
   syn keyword pythonBuiltinObj	Ellipsis NotImplemented
   syn keyword pythonBuiltinObj	__debug__ __doc__ __file__ __name__ __package__