• Added: It's not possible to disable listing of nodes that are denied read
  access by ACL.
• Fixed: Changed a few properties in CalDAV classes from private to protected.
• Fixed: Issue 119: Terrible things could happen when relying on guessBaseUri,
  the server was running on the root of the domain and a user tried to access a
  file ending in .php. This is a slight BC break.
• Fixed: Issue 118: Lock tokens in If headers without a uri should be treated as
  the request uri, not 'all relevant uri's.
• Fixed: Issue 120: PDO backend was incorrectly fetching too much locks in cases
  where there were similar named locked files in a directory.