Update copyright year and refactor version retrieval in conf.py

Author: icemac

docs/conf.py

@@ -14,12 +14,11 @@
 
 import os
 import sys
-
-import pkg_resources
+from datetime import date
+from importlib.metadata import version as dist_version
 
 
 sys.path.append(os.path.abspath('../src'))
-rqmt = pkg_resources.require('zope.catalog')[0]
 
 # 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
@@ -56,16 +55,14 @@
 
 # General information about the project.
 project = 'zope.catalog'
-copyright = '2015-2017, Zope Foundation and Contributors'
+copyright = f'2015-{date.today().year}, Zope Foundation and Contributors'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '%s.%s' % tuple(map(int, rqmt.version.split('.')[:2]))
-# The full version, including alpha/beta/rc tags.
-release = rqmt.version
+version = dist_version('zope.catalog')
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.