Broken in Python3

[aidanharris]

Thanks for this useful plugin.

It doesn't seem to work with Python3 since the urlparse module was renamed to urllib.parse (https://docs.python.org/2/library/urlparse.html#index-0).

Attached below is a simple patch that fixes the issue:

diff --git a/pelican_alias.py b/pelican_alias.py
index 92429bf..d4afa55 100644
--- a/pelican_alias.py
+++ b/pelican_alias.py
@@ -3,7 +3,12 @@ from __future__ import unicode_literals
 
 import os.path
 import logging
-from urlparse import urlparse
+from platform import python_version
+
+if float(python_version()[0:3]) < 3:
+    from urlparse import urlparse
+else:
+    from urllib.parse import urlparse
 
 from pelican import signals