[NEW] Moved to https://github.com/cloudant/couchbackup repository.
[NEW] Validate backup/restore options.
[NEW] Add User-Agent header to all requests.
[NEW] Added unique CLI exit codes for known error conditions.
[NEW] API for using as library that is more Node.js-like.
[NEW] Added changes event for each batch spooled from the changes feed.
[BREAKING CHANGE] The --buffer option is now --buffer-size.
[BREAKING CHANGE] The writeerror event is now just error.
[BREAKING CHANGE] The writecomplete event is now finished.
[BREAKING CHANGE] For restoring, the written event is now restored.
[REMOVED] Removed legacy 1.x API.
[IMPROVED] Verify database supports /_bulk_get endpoint prior to running backup.
[IMPROVED] Existence of the restore destination database is checked before starting the restore process.
[IMPROVED] Added compression for backup HTTP responses, where supported by the server.
[IMPROVED] Added HTTP persistent connection pools corresponding to the backup parallelism.
[IMPROVED] Better error handling in couchrestore when remote database cannot be written to.
[IMPROVED] Validate HTTP responses when restoring a database.
[IMPROVED] Aborts backup and restore processes for known irrecoverable errors.
[IMPROVED] Retry restore batches on transient errors.
[FIXED] An issue where the process could exit before the backup content was completely flushed to the destination stream.
[FIXED] An issue where back pressure on the output stream was ignored potentially resulting in the backup process running out of memory.
[FIXED] An issue where the log entry could be written for a batch before the batch was written to the backup file.
[FIXED] An issue where a restore of a resumed backup might not complete due to incomplete JSON entries in the backup file.
[FIXED] An issue where an empty batch could be written to the backup file.
[FIXED] An issue where the restore-time buffer size was ignored.
[FIXED] Ensure body 'rows' key exists before performing shallow backup.
[FIXED] An issue where write errors were not correctly reported.
[FIXED] An issue where couchbackup would attempt to write to an invalid output file.