Bupstash v0.11.0

This release adds new commands, improves repository compression, reduces bandwidth usage, and improves support for paths that are invalid unicode.

New features:

• Added the new bupstash sync command for efficiently transferring data between repositories.
• Added the new --allow-sync permission to bupstash serve.
• Added the new bupstash exec-with-locks command for running commands with exclusive repository write access.
• Added the zstandard compression algorithm, decreasing repository sizes 30 percent in some benchmarks.
• Added an optional --compression flag has been added to specify the compression algorithm and level during puts.

Improvements:

• The put and restore command can now preserve sparse file holes, improving the accuracy of backups.
• The restore command now restores mtime timestamps on restored files.
• FreeBSD support has been improved.

Notable Bug fixes:

• Support for paths that are not valid unicode but are still valid unix paths has been improved.
• * no longer matches / in put exclusions.

Incompatibilities:

• Repositories will be automatically migrated by bupstash and cannot be used with older versions of bupstash after migration.
• The bupstash remote protocol version has been incremented to support new features and does not interoperate with older bupstash versions.
• The --no-compression flag has been removed (use --compression=none instead).
• The list-contents command json output now uses 'null' instead of undefined values for missing fields.
• The list-contents command json output will emit paths as byte arrays if they are not representable as json strings.
• The send log now stores chunk addresses in more situations so will grow in size in many cases.
• Put exclusions have slightly different matching semantics and should be reviewed.