[gtksourceview] Release 3.99.4

[Sébastien Wilmet <swilmet src gnome org>]

commit b8eb9e266ab209193bf60029dd5669b39ba4d5a4
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Apr 23 16:05:35 2017 +0200

    Release 3.99.4

 NEWS |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 4aaf317..7f306b8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,17 @@
+News in 3.99.4
+--------------
+* The API of the GtkSourceView::move-lines keybinding signal has been
+  simplified: the copy parameter has been removed; and the count parameter has
+  been replaced by the down boolean.
+* Force visual word movements for RTL text with Ctrl+left/right.
+* Improvements to the Visual Studio builds and add support for Visual Studio
+  2017.
+* Improvements to the syntax highlighting of: Rust and LaTeX.
+* Add mimetype to python3.lang.
+* Misc bug fixes.
+* Various other small improvements.
+* Translation updates.
+
 News in 3.99.3
 --------------