Release 0.21

• Add new 'gandi disk migrate' command
• Update 'gandi setup' command to ask for apikey for REST API
• Handle deprecated images
  • Add a warning during 'gandi vm create' command
  • Display a * before image labels on 'gandi vm create' help
  • Display a /!\ DEPRECATED on 'gandi vm images' command
• Fixes #220: gandi record update issues
  • Do not cast to int the id of the record, use the retrieve value
  • Handle both record syntax with 'IN' or not when parsing
  • Delete created zone if record.update call fail from xmlrpc API
• Fixes #219: Can't remove disk snapshot profile
• vm: delete: Fix delete when we reach the list limit
  • Fixed a bug when deleting a vm that wasn't listed in the first 500 results
    of gandi.iaas.list.
• Fix issue when updating disk kernel with a kernel from another datacenter
  • CLI was proposing only kernels available on datacenter 1, but some kernels
    are available only on other datacenters, so we list everything for --kernel
    parameters, and for disk update command we add a new check if this kernel is
    available for this disk on this datacenter.
• Add epilog to help messages to notify user about man documentation
• Add one new verbose level for dumping data