* Added a new user guide that covers pgBackRest basics and some advanced topics including PITR. Much more to come, but it's a start.
* The website, markdown, and command-line help are now all generated from the same XML source.
* The backup_label.old and recovery.done files are now excluded from backups.
* Added new feature to allow all pgBackRest operations to be stopped or started using the stop and start commands. This prevents any pgBackRest processes from running on a system where PostgreSQL is shutdown or the system needs to be quiesced for some reason.
* Removed dependency on IO::String module.
* Fixed an issue where an error could be returned after a backup or restore completely successfully.
* Fixed an issue where a resume would fail if temp files were left in the root backup directory when the backup failed. This scenario was likely if the backup process got terminated during the copy phase.
* Experimental support for PostgreSQL 9.5 beta1. This may break when the control version or WAL magic changes in future versions but will be updated in each pgBackRest release to keep pace. All regression tests pass except for --target-resume tests (this functionality has changed in 9.5) and there is no testing yet for .partial WAL segments.
* Fixed an issue where resumed compressed backups were not preserving existing files.
* Fixed an issue where resume and incr/diff would not ensure that the prior backup had the same compression and hardlink settings.
* Fixed an issue where a cold backup using --no-start-stop could be started on a running PostgreSQL cluster without --force specified.
* Fixed an issue where a thread could be started even when none were requested.
* Fixed an issue where the pgBackRest version number was not being updated in backup.info and archive.info after an upgrade/downgrade.
* Fixed an issue where the info command was throwing an exception when the repository contained no stanzas. Reported by Stephen Frost.
* Fixed an issue where the PostgreSQL pg_stop_backup() NOTICEs were being output to stderr. Reported by Stephen Frost.
* Renamed recovery-setting option and section to recovery-option to be more consistent with pgBackRest naming conventions.
* Command-line help is now extracted from the same XML source that is used for the other documentation and includes much more detail.
* Code cleanup and refactoring to standardize on patterns that have evolved over time.
* Added dynamic module loading to speed up commands, especially asynchronous archiving.
* Expiration tests are now synthetic rather than based on actual backups. This will allow development of more advanced expiration features.
* Experimental support for PostgreSQL 9.5 alpha2. This may break when the control version or WAL magic changes in future versions but will be updated in each pgBackRest release to keep pace. All regression tests pass except for --target-resume tests (this functionality has changed in 9.5) and there is no testing yet for .partial WAL segments.
