[Bug-gnuzilla] IceCat 52.0.2 release

[Ruben Rodriguez]

GNUzilla is the GNU version of the Mozilla suite, and GNU IceCat is the
GNU version of the Firefox browser. Its main advantage is an ethical
one: it is entirely free software. While the Firefox source code from
the Mozilla project is free software, they distribute and recommend
non-free software as plug-ins and addons. Also their trademark license
restricts distribution in several ways incompatible with freedom 0.
https://www.gnu.org/software/gnuzilla/

The user manual pages are at http://libreplanet.org/wiki/Group:IceCat/
You can contribute by joining the wiki and editing the manuals.

Source tarballs, binaries for generic GNU/Linux systems and translations
are available at http://ftp.gnu.org/gnu/gnuzilla/52.0.2/
GPG key ID:D7E04784 GNU IceCat releases
Fingerprint: A573 69A8 BABC 2542 B5A0 368C 3C76 EED7 D7E0 4784
https://savannah.gnu.org/project/memberlist-gpgkeys.php?group=gnuzilla

This release introduces few changes aside of the major upgrade from v45
to v52. It required changes to the branding, default extensions, and
build system. These development-relevant changes can be tracked at
http://git.savannah.gnu.org/cgit/gnuzilla.git and
http://git.savannah.gnu.org/cgit/gnuzilla.git/tree/data/Changelog.IceCat

Notable improvements introduced upstream include:
 * Captive portal detection and handling
 * Native support for FLAC
 * Along with many performance and security improvements.
 * Multiprocess windows ("Electrolysis"). Note that GNU LibreJS is not
compatible with this feature, which is globally disabled as a result.
Please consult https://www.gnu.org/software/librejs/ on how to help.