Kathleen Brade authored Jan 13, 2017 and Matthew Finkel committed Feb 05, 2021

The following files are never updated:
  TorBrowser/Data/Browser/profiles.ini
  TorBrowser/Data/Browser/profile.default/bookmarks.html
  TorBrowser/Data/Tor/torrc
Mac OS: Store update metadata under TorBrowser/UpdateInfo.
Removed the %OS_VERSION% component from the update URL (13047) and
  added support for minSupportedOSVersion, an attribute of the
  <update> element that may be used to trigger Firefox's
  "unsupported platform" behavior.
Hide the "What's new" links (set app.releaseNotesURL value to about:blank).
Windows: disable "runas" code path in updater (15201).
Windows: avoid writing to the registry (16236).
Also includes fixes for tickets 13047, 13301, 13356, 13594, 15406,
  16014, 16909, 24476, and 25909.

Also fix Bug 26049: reduce the delay before the update prompt is displayed.
Instead of Firefox's 2 days, we use 1 hour (after which time the update
doorhanger will be displayed).

Also fix bug 27221: purge the startup cache if the Tor Br...