This is a regularly scheduled stable release.

Resolved issues since v0.12.23:

* #3884: lib/sync: Fix a race in unlocker logging
* #3976: Links and log messages refer to https instead of http where possible

Also:

* As of this release, symlinks are no longer supported on Windows.
* The default number of parallel file processing routines per folder is now two (previously one), and the number of simultaneously outstanding network requests has been increased.
* The GUI now contains buttons to pause or resume all folders with a single action.