0.4.0

Added

• Added per-message encryption keys, using a per-connection pair of
  random salts and randomly generated additional infos per message.
  This is a breaking change in the communication format, so agents
  older that this release will not be able to communicate with
  newer agents.
• Added the ability to construct most of the python-exposed objects
  in Python by mapping the parse functions to Python constructors.
  This will make it easier to save objects to strings, and then
  reconstruct as needed.
• Added the ability to ignore invalid SSL certificates when connecting
  to a FreeIPA server, if the environment variable
  OPENPORTAL_ALLOW_INVALID_SSL_CERTS is equal to true. The default
  is false, so that invalid certificates are not allowed.
  This should only be used in development or debugging, as use
  in production is a security risk.
• Added a check so we can't query projects from the wrong portal.