change version to 4.7
diff --git a/source/conf.py b/source/conf.py
index 8bd2267..751e4fa 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -60,9 +60,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '4.6'
+version = '4.7'
 # The full version, including alpha/beta/rc tags.
-release = '4.6.0'
+release = '4.7.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.