TODO
* B-tree
** Validate (expected) btree level to detect loops - added maximum recursion depth for now
* Validate checksum
** B-tree node
** Container key bag
** Volume key bag
** Reaper
** Object map
** Space manager
* Container superblock read file IO handle add block size support
* use container data block vector in read file IO handle
** Volume superblock
** Container map
** Container key bag?
* Handle file size of 0, mapped file size does not support 0 ?
* Container data handle add decryption support and use it to read container key bag?
* add snapshot support

library:
* check if data block vector allocated size matches size of file extents
* get_extent function, check inode flags and set extent is sparse flag
* expose directory entry added time

* improve format support
** check for more compression methods
** Add resource fork support
** read zlib compressed resource fork data footer
** Check deflate compressed files edge case where first byte is 0x#f

* change container read bootstap as advised in documentation
** read backup container superblocks

* API
** separate internal external attribute descriptor and API external descriptor
** Add function to provide volume size
** Add function to provide volume date and time values

* optimization
** read inode and extended attributes at once
** cache uncompressed blocks

* clean up / restructure
** refactor libfsapfs_encryption_aes_key_unwrap to use encryption context?

Python bindings:
* add extents object?
* add extended_attribute object

Tools:
* fsapfsinfo tool
** add volume selection via GUID in path
** prompt user for password or recovery password when needed
** print extended attribute values
** handle \r in filename
** print hardlinks for -E option?
** "-E all" instead of using next_object_identifier walk leaf nodes
* fsapfsmount tool
** prompt user for password or recovery password when needed
** make symbolic links an absolute path which accounts for mount point
** add owner and group identifier support?
** add support for all volumes
** add volume selection support
** add extended attributes support
** does fuse override file types such as socket?
** dokan add symbolic link support

Tests:
* add tests for container_key_bag
* add tests for volume_key_bag
* add tests for key_encrypted_key
* add tests for Unicode filenames

20180907
* see `git log' for more recent change log
* Initial version based on libfsrefs and libfsntfs

