automaticlally set version in Sphinx from release

docs/conf.py

@@ -59,11 +59,14 @@ author = 'aMQTT contributers'
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-# The short X.Y version.
-version = '0.10'
+
 # The full version, including alpha/beta/rc tags.
 release = '0.10.0 alpha 0'
 
+# The short X.Y version.
+version = ".".join(release.split(".")[:2])
+
+
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #