v2.1.4-rc.2

Major changes in 2.1

• Devices and folders can now be grouped in the GUI by setting the new
  group attribute.

• HTTP and HTTPS proxies with support for CONNECT can now be used, in
  addition to the existing support for SOCKS proxies (the environment
  variable all_proxy=https://...).

• Block indexing can be turned off for folders where it's more desirable to
  optimise for reduced database size and overhead than minimal transfer
  size (the blockIndexing attribute on folder configuration).

• GUI login session duration can be configured to be longer or shorter than
  the default one week, or set to infinitely long. The cookie path can also
  be adjusted. (The sessionCookieDurationS and sessionCookiePath
  attributes in the GUI configuration.)

This release is also available as:

• APT repository: https://apt.syncthing.net/

• Docker image: docker.io/syncthing/syncthing:2.1.4-rc.2 or ghcr.io/syncthing/syncthing:2.1.4-rc.2
  ({docker,ghcr}.io/syncthing/syncthing:2 to follow just the major version)

What's Changed

Fixes

• fix(model): correctly handle receive-only changed directories (fixes #8004) by @calmh in #10843
• fix(api): correctly return metrics, support bundle (fixes #10847) by @calmh in #10849
• fix: open GUI when relaunched instead of printing error (fixes #10727) by @calmh in #10852

Other

• chore: style fixes from go fix by @calmh in #10846
• build: use Go 1.27, minimum version is Go 1.26 by @calmh in #10864
• build(deps): update dependencies by @calmh in #10865
• chore: set User-Agent on all outgoing HTTP requests by @calmh in #10867

Full Changelog: v2.1.3...v2.1.4-rc.2