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2016-11-17, v0.21
	* Add a new auth_keys OS parameter for injecting SSH keys to the
	  instance during creation
	* Add DEFAULT_NIC_CONFIG configuration parameter for configuring the
	  default NIC
	* Fix small bugs

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2016-11-10, v0.20.2
	* Fix a bug where the disk was truncated to the size of the image file
	  if the used disk template was "file" or "sharedfile"
	* Make image copying work when using userspace disk URIs

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2016-10-4, v0.20.1
	* Fix a "no properly formatted MD5 checksum lines found" bug in
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	  snf-image-update-helper
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2016-10-3, v0.20
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	* Add support for NetworkManager in CofigureNetwork configuration task
	* Add a new Linux configuration task for regenerating the machine ID
	* Update the documentation

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2016-07-20, v0.19.1
	* Add "auto" to the known Linux file systems

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2016-01-28, v0.19
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	* Support Windows XP/2003 (windows-legacy OSFAMILY)
	* Support 32-bit versions of Windows
	* Add new os_product_key and os_answer_file OS parameters
	* Allow offline resizing for NTFS
	* Cleanup the default Unattend.xml file
	* Allow defining the Windows time zone in the default Unattend.xml file
	* Add new image configuration task that executes user defined code
	* Allow the image itself to overwrite configuration tasks that run
	  during deployment when the image is mounted
	* Support Ed24419 ssh keys
	* Support making swap in secondary disk
	* Strip down the helper kernel (reduces helper image size)
	* Support Debian Jessie helpers
	* Fix bugs and cleanup the code
	* Update the documentation

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2015-03-13, v0.18.1
	* HELPER: Fix a bug in ConfigureNetwork task that caused a syntax error
	  if the SUBNET was missing for a NIC
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2015-03-03, v0.18
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	* HELPER: Auto-detect OSFAMILY and ROOT_PARTITION properties if missing
	* HELPER: Add new CofigureNetwork image configuration task
	* Add new DCHP_TAGS, STATEFUL_DHCPV6_TAGS and STATELESS_DHCPV6_TAGS
	  configuration parameters
	* Update the documentation
	* Fix small bugs

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2015-01-15, v0.17
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	* Add support for btrfs
	* Add support for xfs
	* Add support for CoreOS
	* Make all errors one line long
	* Create man pages for snf-image-{update,create}-helper
	* Shrink the helper VM
	* Check the md5sum after downloading the helper VM
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	* Update the documentation
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	* Fix bugs

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2014-10-30, v0.16.3
	* pithcat: Set the default umask to 007 and fix the initialization of
	  the backend

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2014-10-14, v0.16.2
	* Fix a bug in img_properties handling introduced in v0.16.1
	* Update the documentation

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2014-10-13, v0.16.1
	* Add an option for controlling pithcat's umask
	* HELPER: prevent configuration tasks from running if no image property
	  is defined

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2014-09-22, v0.16
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	* Add support for Desktop variants of Windows
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	* Add support for archipelago images
	* Update the documentation

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2014-07-18, v0.15.2
	* Fix configure.ac to work with newer versions of automake

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2014-06-02, v0.15.1
	* Remove support for OS API version 5, 10, 15
	* Make img_passwd an optional parameter
	* Allow OS parameters to be defined in /etc/default/snf-image and the
	  variants files.
	* Fix bugs, typos and update the documentation

2014-05-16, v0.15
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	* Add support for selectable pithos storage backend. Possible storage
	  backends for pithos are `nfs' or `rados'
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	* Fix bugs, typos and update the documentation
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2014-04-11, v0.14
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	* Add support for extending NetBSD partitions
	* Change the default Virtual RAM size of the helper VM to 512M
	* Do various improvements in the documentation
	* Optimize image copying by using fullbock iflag in dd
	* Fix a kpartx race condition when deploying {ext,ntfs}dump images

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2014-02-06, v0.13
	* Add support for extending OpenBSD partitions
	* Add a new HELPER_MEMORY option in /etc/default/snf-image. This can be
	  used to specify the Virtual RAM size of the helper VM

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2014-01-24, v0.12.1
	* Fix a bug affecting import and export scripts

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2013-11-04, v0.12
	* Add support for OpenBSD and NetBSD images (partition resizing is not
	  supported yet)
	* Fix a bug in ChangePassword task that could lead to the removal of
	  one or more user entries in the shadow file.

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2013-10-21, v0.11.1
	* Fix a bug in pithcat
	* Minor updates in the documentation

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2013-10-18, v0.11
	* Update the documentation
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	* Change local backend identifier from file:// to local//
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	* Make sure the user does not specify local images outside IMAGE_DIR by
	  using .. in the IMG_ID parameter
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	* HELPER: Fix a bug triggered when the image is corrupted
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2013-09-23, v0.10.1
	* Merge the ChangeLog files of snf-image and snf-image-helper
	* Add version check in snf-image-update-helper
	* Remove HELPER_URL from common.in

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2013-09-19, v0.10
	* Move the snf-image-helper image from squeeze to wheezy
	* Add documentations under /docs
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	* Fix a bug in the network backend
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2013-09-02, v0.9.3
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	* Add code to download and install a fixed snf-image-helper image. This
	  is the default behavior for snf-image-update-helper.
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2013-08-27, v0.9.2
	* Use devflow building system
	* In pithcat if the provided URL is a pithosmap, initialize the backend
	  with no database

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2013-05-16, v0.9.1
	* Change pinned version for ufsutils package

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2013-04-23, v0.9
	* Add support for FreeBSD images
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	* HELPER: Fix a few bugs in the helper monitoring system
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2013-03-12, v0.8.1
	* Fix a bug in helper-monitor.py
	* Make snf-image-update-helper install a patched version of ntfs-3g.
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	  The Debian Squeeze version does not recognize the "--no-mtab" option
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	* Update contact email address

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2013-03-09, v0.8
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	* Add support for Xen
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	* Increase the default HELPER_SIZE and TIMEOUT values
	* Cleanup the code and remove settings no longer used
	* Rename snf-image-host to snf-image
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	* HELPER: Add support for Xen
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	* HELPER: Cleanup the helper code
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2013-01-21, v0.7.6
	* Make the size of the helper VM image configurable
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	* HELPER: Mount /proc and /dev before chrooting
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	* HELPER: Fix a bug in DeleteSSHKeys task where the code for checking
	  for non-default keys was never called.
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2013-01-17, v0.7.5
	* Cleanup defaults file and remove redundant variables
	* Make defaults file inherit the configuration options
	  passed with ./configure

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2013-01-08, v0.7.4
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	* HELPER: Fix a bug in the code that determines which partition to
	  resize
	* HELPER: On Linux images, mount all local partitions during the
	  deployment, not just /.
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2013-01-04, v0.7.3
	* Fix multistrap.conf to work with apt2.dev.grnet.gr

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2013-01-04, v0.7.2
	* Change snf-image-helper repository to apt2.dev.grnet.gr
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	* HELPER: In Windows images make sure the file:
	  `C:\Windows\panther\Unattend.xml' gets removed after sysprep runs
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	* HELPER: Support extended partitions with id 0x0f
	* HELPER: Fix a bug in the error monitoring system
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	* HELPER: Fix a bug in AssignHostname for Arch Linux images
	* HELPER: In AssignHostname check for the presence of /etc/hostname
	  before trying to determine the disto of a Linux image.
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2012-12-07, v0.7.1
	* Make pithcat work with pithosmap URLs
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	* HELPER: Fix a race condition where in some cases could lead to a
	  kernel panic for the helper VM.
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2012-12-03, v0.7
	* Abandon debootstrap in favor of multistrap. This way we can define
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	  more than 1 repositories to retrieve packages from.
	* Add a mechanism for pinning repositories and package versions
	* Add a version check in snf-image-update-helper. After the creation
	  of the helper, check if the versions of snf-image-{host,helper} match
	* Remove the HELPER_PKG variable from common.sh. The helper package by
	  default should get downloaded from a repo using
	  snf-image-update-helper. You can still install a package from the
	  local file system using the -p variable.
	* Specify snf-image-helper as the init process when running the helper
	  VM
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	* HELPER: Make snf-image-helper the init process of the system
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	* HELPER: Shutdown the helper VM fast using the appropriate SysRq key
	* HELPER: Use `eatmydata' to omit the syncs performed by resize2fs when
	  resizing a file system. You can suppress this behavior by defining
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	  the DO_SYNC image property.
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2012-11-20, v0.6.5
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	* HELPER: Fix a bug in AssignHostname configuration task where the
	  script did not search for the presence of the Unattend.xml file in
	  the VM, in a case-insensitive way.
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2012-11-15, v0.6.4
	* Fix a bug in snf-image-update-helper introduced in v0.6.3

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2012-11-13, v0.6.3
	* Fix a bug in snf-image-update-helper where the temporary image file
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	  was not removed if an error occurred.
	* HELPER: Don't overwrite C:\Unattend.xml file in Windows images,
	  unless the image property USE_DEFAULT_UNATTEND is defined.
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	* HELPER: Fix a bug in the error monitoring system
	* HELPER: Correct some error messages
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2012-10-12, v0.6.2
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	* Separate the error messages that should be logged by the system from
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	  those that should be propagated to the user through the monitoring
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	  mechanism. Don't allow internal configuration options get revealed to
	* HELPER: Remove the rule of updating the password for user `user' in
	  Fedora and Ubuntu when the USERS image property is missing.
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	* HELPER: Check if a user exists before updating its password.
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2012-10-05, v0.6.1
	* Use Coordinated Universal Time when logging.
	* Fix a bug in the way snf-image-update-helper reads the links of the
	  kernel and the initrd in the helper VM.
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	* Use environment variables instead of input options to pass sensitive
	  data to pithcat. This is needed because when pithcat is running,
	  every user can see the program's command line by using ps.
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2012-09-15, v0.6
	* Fix import and export scripts
	* Add new config_url os parameter. This can be used by snf-image to
	  download a json file that contains the value for other os parameters
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	* HELPER: Make sure EnforcePersonality is the last task that runs
	  before UmountImage. Doing this ensures that user-injected files never
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	  get overwritten by any other configuration task.
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2012-08-31, v0.5
	* Add a new progress monitoring mechanism. With this new mechanism,
	  snf-image can output progress and error messages to external programs
	  when running.
	* Make the name of image properties case insensitive
	* Abandon timelimit command in favor of timeout
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	* Add support for null image backend type. This back-end type can be
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	  used if we want snf-image to configure the VM disk without first
	  copying an image to it.
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	* HELPER: Add a new progress monitoring mechanism
	* HELPER: Add support for arch Linux
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2012-06-29, v0.4.2
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	* HELPER: Make the name of image properties case-insensitive
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2012-05-28, v0.4.1
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	* HELPER: Fix a bug in FixPartitionTable where in some cases the script
	  failed to create the logical swap partition.
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2012-05-17, v0.4
	* Remove progress-monitor-support flag. An external progress monitor
	  programm will be used if --with-progress-monitor flag is used in
	  configure or if PROGRESS_MONITOR variable in the defaults file has a
	  non-empty value
	* Remove --enable-pithos-backend option in configure. This will be
	  detected at runtime
	* Create package list in snf-update-helper every time debootstrap is
	  performed. If a cache file is found, snf-update-helper will use this
	  list to determine if it is OK to use this cache file or not.
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	* Add mechanism for overwriting the helper's Unattend.xml file
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	* HELPER: Add support for creating SWAP partitions
	* HELPER: Add support for GPT partition tables
	* HELPER: Add support for resizing logical partitions
	* HELPER: Add mechanism for overwritting Unattend.xml
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2012-03-29, v0.3.6
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	* Make snf-image-update-helper ask whether to use the found deboostrap
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	  cache file when in interactive mode.
	* Make the system update the default debootstrap cache file when -c
	  option is used and it's value does not point to a cache file.
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2012-03-26, v0.3.5
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	* HELPER: Force Automatic Update in Windows images
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2012-03-05, v0.3.4
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	* HELPER: Fix 2 bugs in Delete SSH Keys task, caused by the use of
	  pipefail bash option
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2012-02-29, v0.3.3
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	* Fix a bug in pithcat where the restored image had incorrect size.
	  The trailing zeros in the image files where not restored.
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	* HELPER: Check if the images partition table is valid
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2012-02-06, v0.3.2
	* Make pithcat work with pithos v0.8.3

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2012-01-26, v0.3.1
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	* HELPER: Fix a bug in the OS detection code
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2011-01-12, v0.3
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	* Put all helpers run-time created files in a tmpfs jail
	* Remove the ARCH field from the image name
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	* Support remote (network accessible) and Pithos hosted images
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	* Remove custom images format (remote images is a supergroup)
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	* HELPER: Warn and in some cases fail if the instance is of an unknown
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	* HELPER: Force a resize when the file system is clean, even if
	  resize2fs complains
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	* HELPER: Make sure OSFAMILY image property is specified
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2011-11-18, v0.2
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	* Support diskdump format
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	* Support custom images format. Custom images are diskdump images that
	  can be accessed from a URL
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	* Add a new OS parameter (img_properties)
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	* HELPER: Add support for Image Properties
	* HELPER: Add new FixPartitionTable task
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	* HELPER: Add new task to disable RDP connections during Windows setup
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	* HELPER: Extend image personalization to support custom ownership and
	  permissions in the injected files
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2011-10-20, v0.1.2
	* Fix a debootstrap bug in snf-image-update-helper
	* Use --one-file-system option when creating cache for update-helper
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	* Add setting for allowing the user to manually pick a Debian mirror
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	  for debootstrap.

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2011-10-17, v0.1.1
	* Replace $(var) with ${var} in defaults file.
	* Fix a dangerous-use-of-xargs bug in create.
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	* HELPER: Fix a bug in ChangePassword task
	* HELPER: Add timestamps in output of the tasks
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2011-10-04, v0.1
	* Initial release