Add Progress
Add Medium
Add StorageController
Add Console
Remove enumerations (not needed any more)
Move String.to_a to Base
Add event-related classes
Validate arguments in Host
Add DHCPServer
Add Display
Add Guest
Minor syntax change
Remove debugger as it's not supported in web service
Add ManagedObjectRef. Add capability to release the object and get object's class in Base
Add HostNetworkInterface
Add HostUSBDevice
Add HostUSBDeviceFilter
Add Keyboard
Add Mouse
Add MediumFormat