PEP 8
Fix AttributeError when there’s no head
Fix ElementList to consume the entire context
Goal  [ci skip]
FileSystemRepository does mkdir if not exist
typo

48bd753b2bf65828b790a2bc3b99b815c58fc9bf
Some py versions might not have LocalPath.isdir()
SubscriptionList.owner can be None
<outline> has created attribute (not created_at)
Store feed id to subscription list
Method to add subscription from feed.  Close #25
Merge branch 'bugs'