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Syncthing v0.13.0 "Copper Cockroach"
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Upgrade Notes
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- v0.13 is not protocol compatible with v0.12.

- The database format has changed. It will be migrated without rescan on
  first startup, but the first startup may take longer than usual.

Major Changes Since v0.12
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Devices now announce files that are in progress of being downloaded, in
addition to those that are already complete. This means a device can serve
parts of a file to other devices before it has completed the download
itself.

Folder labels are now distinct from the folder ID. The intention is for the
label to be human readable and for the ID to be machine readable and unique.
When upgrading, folder IDs are not changed. However when creating new
folders Syncthing will suggest a random, unique folder ID.

When receiving a connection attempt from an unknown device Syncthing will
now show the name of that device, not only it's ID.

Syncthing will now manage port mappings on NAT-PMP compliant routers, in
addition to the existing UPnP support.

Minor Changes and Improvements
------------------------------

- Ignored files can now be tagged with the prefix (?d) to indicate that
  Syncthing may delete these files if they remain when deleting a directory.
  Ignore patterns use less memory by default.

- The address for sync connections, both the listening side and for remote
  devices, can now be made IPv4- or IPv6-only. Use the tcp4:// or tcp6://
  schemes to specify one or the other. The default tcp:// is still dual
  stack. Additionally, relays are now treated as listen addresses and set in
  the same configuration setting.

- The folder settings dialog has been cleaned up.

- The environment variable ALL_PROXY_NO_FALLBACK can be set to disable
  falling back to direct connections in the absence of a working proxy.

- Many, many bug fixes.

Known Issues
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- The "Syncing" complete percentage for remote devices may erronously
  display more than 100% (i.e. 156% or 297%) while a remote device is still
  synchronizing.