Read documentation version from module

Author: manisandro

doc/conf.py

@@ -55,10 +55,11 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
+import sane
 # The short X.Y version.
-version = '2.8.0'
+version = sane.__version__
 # The full version, including alpha/beta/rc tags.
-release = '2.8.0'
+release = sane.__version__
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.