[librsvg: 4/5] Update NEWS.md

[Marge Bot <marge-bot src gnome org>]

commit f482e58da29d4272b04baad961fb53e7cf0441fb
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Aug 2 17:33:46 2022 -0500

    Update NEWS.md
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/723>

 NEWS.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/NEWS.md b/NEWS.md
index 96bb54a43..4119561f1 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,22 @@
+Version 2.55.0-alpha
+====================
+
+This is the first release in the new development series.
+
+- The Minimum Supported Rust Version (MSRV) is now Rust 1.58.
+
+- #855: The release tarball no longer contains vendored Rust
+  dependencies.  Most distributions now have infrastructure to pull
+  these themselves, so let's make the tarball smaller.
+
+- #880 - Accept patterns with userSpaceOnUse units for the stroke of
+  axis-aligned lines.
+
+- #706: Small reductions in memory consumption of the DOM tree
+  (Michael Howell).
+
+- Updates for the gtk-rs API (Bilal Elmoussaoui).
+
 Version 2.54.4
 ==============