python-btrfs 0.2, Jun 28 2016
  * Datastructures: DevExtent
  * Python 3 compatibility
  * Utils: lookup total filesystem usage (incl. unallocatable space)
  * Example nagios nrpe monitoring plugin
  * Fixes:
    - Optimize block group search

python-btrfs 0.1, Jun 21 2016
  * IOCTLs: IOC_SPACE_INFO, IOC_TREE_SEARCH, IOC_FS_INFO, IOC_DEV_INFO
  * Datastructures: Device (dev_item), Chunk, Stripe, BlockGroup,
    Extent, ExtentDataRef, SharedDataRef
  * btrfs.FileSystem main entry point for usage
  * Handing of the search Key (objectid, type, offset)
  * Utils: pretty printing amounts of bytes and block group /
    chunk types and profiles (like, MetaData, RAID1 etc...),
    determine wasted (unallocatable) space for RAID0, RAID1
  * Example snippets using all functionality
  * Example munin monitoring plugin
