Bump version to 1.8.4

Author: bellisk

setup.py

@@ -14,7 +14,7 @@
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/distributing.html#version
-    version='1.8.1',
+    version='1.8.4',
 
     description='''A ckan extension to showcase datasets in use''',
     long_description=long_description,