Merge branch 'fix_pelican_version' into 'master'

Fixing pelican version due to issue with newer version

See merge request !608

requirements.txt

@@ -9,6 +9,6 @@ Jinja2
 maya
 urllib3==1.24.2
 requests
-pelican
+pelican==4.2.0
 tweepy
-gitpython
\ No newline at end of file
+gitpython