Set version string using module

doc/source/conf.py

@@ -15,6 +15,8 @@
 import sys
 import os
 
+import cf_units
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -55,10 +57,11 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
+current_version = cf_units.__version__
 # The short X.Y version.
-version = '1.0'
+version = current_version.split('+')[0]
 # The full version, including alpha/beta/rc tags.
-release = '1.0.0'
+release = current_version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.