[gimp-web/testing] content: preparing news for 2.10-RC2.

[Jehan Pagès <jehanp src gnome org>]

commit 8176e0592fd9f857bacdd2182fb49550bbe39717
Author: Jehan <jehan girinstud io>
Date:   Thu Apr 12 16:53:34 2018 +0200

    content: preparing news for 2.10-RC2.

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+Title: GIMP 2.10.0 Release Candidate 2 Released
+Date: 2018-04-14
+Category: News
+Authors: Wilber
+Slug: gimp-2-10-0-rc2-released
+Summary: GIMP 2.10.0-rc2: the end is near
+Status: draft
+
+Here is the second release candidate! In the last 3 weeks, since GIMP
+2.10.0-RC1, 38 bugs have been fixed, with more than 140 commits pushed,
+quite a high rate of fixes as often just before a major release.
+
+For a complete list of changes please see [NEWS](https://git.gnome.org/browse/gimp/tree/NEWS).
+
+## Optimizations and multi-threading for painting and display
+
+A major regression of GIMP 2.10, compared to 2.8, was slower painting.
+Several optimizations have been merged in GIMP core, but also in babl
+and GEGL regarding this issue, by several contributors (Ell, Jehan,
+Massimo Valentini, Øyvind Kolås…), along with a lot of speed tests
+performed by Elle Stone and Jose Americo Gobbo.
+
+The whole issue pushed Ell to implement multi-threading within GIMP, so
+that painting and display are now run on separate thread, hence greatly
+speeding up feedback of the graphical interface.
+
+## Themes Rewritten
+
+Since the development version 2.9.4, we had [new themes shipped with
+GIMP](https://www.gimp.org/news/2016/07/13/gimp-2-9-4-released/), and in
+particular dark themes, as is now common for graphics applications.
+Unfortunately there was no maintainers anymore and bugs were piling up in
+the themes, providing a poor experience.
+
+Ville Pätsi, long time contributor, has taken up the task of creating
+brand new themes without any of the usability issues and glitches of
+previous ones. While cleaning up, only the *Gray* theme has been kept,
+whereas *Light* and *Dark* were rewritten from scratch. *Darker* and
+*Lighter* themes have been removed (they won't likely reappear unless
+someone decides to rewrite and contribute them as well, and unless this
+person stays around for maintainance).
+
+### New on-canvas control for 3D rotation
+
+A new widget for on-canvas interaction of 3D rotation (yaw, pitch, roll)
+has been implemented by Ell. This new widget is currently only used for
+the Panorama Projection filter.
+
+## Translations
+
+
+## GEGL changes
+
+
+## What's Next
+
+We are now **8 blocker bugs** away from the final release.
+On your marks, get set…