automate copyright year information

Author: mmcky

docs/source/conf.py

@@ -101,7 +101,8 @@ def install(package):
 
 # General information about the project.
 project = u'QuantEcon'
-copyright = u'2014, QuantEcon Developer Team'
+year = datetime.now().year
+copyright = f'2008-{year}, QuantEcon Developer Team'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the