Pghoard

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* Support for PostgreSQL 9.6 (beta 1)
* Always use strings as metadata keys and values in object storage, fixing
recent issues with Google Cloud Storage which started throwing a "Backend
Error" when an integer value was used as well as fixing old WAL cleanup.
* Make LZMA compression level configurable
* Fix unprocessed file handling in receivexlog mode after restart
* Miscellaneous bug fixes

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* Support for PostgreSQL 9.2
* Support for Python 3.3
* Various commands no longer require site if a config file with a single
site is used. Configuration handling was refactored and much improved
* S3 multipart uploads for greater network error resiliency
* Creating new basebackups by timer can be disabled entirely for a site by
removing the basebackup_interval_hours option or setting it to a null
value
* Ignore requests to archive backup labels, they are not used by PGHoard
* Emit a warning when running under systemd without python-systemd installed
* Test and logging improvements, including support for proper use of syslog
* Miscellaneous bug fixes

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* Consider last basebackup's start time instead of completion time for
scheduling the next basebackup
* ``pghoard_create_keys`` can now update an existing configuration file
* Support for OpenStack Swift object storage
* More generic object storage configuration. All configuration keys for
object stores are passed as-is to the implementation. This also meant
that some defaults were dropped: bucket_name and container_name must be
manually set, they no longer default to ``pghoard``.
* New test cases to validate object storage interfaces - the tests revealed
a couple of minor issues which have been fixed in this release
* ``pghoard`` can now be built from a checkout of a tag, namely generation
version.py no longer requires a .git directory
* Documentation and build process improvements

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* Support for PostgreSQL 9.3 - 9.5
* Support compressing basebackups on the fly
* Add ``archive_sync`` command to sync archive / check archive integrity
* Support different recovery_targets
* Support encryption and integrity protection of the backup files
* Snappy compression support
* Better unittests (also with an actual PostgreSQL)
* Require Python3.4 or newer
* Support prefetching files during restore
* Bug fixes

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* Initial release