• DBusMockObject: Add UpdateProperties() method (Thanks to Jonas Ådahl)
• DBusTestCase: Add bus override argument to spawn_server_template, to use
  templates on either system or session bus; add corresponding --session CLI
  option
• bluez template: Implement Pair() method on the Device interface and the
  AgentManager1 interface (Thanks to Bastien Nocera)
• polkit template: Implement RegisterAuthenticationAgent() (Thanks to Jonas Ådahl)
• Add accountsservice template (Thanks to Marco Trevisan)