[libpanel] Release libpanel 1.0.0 (GNOME 43.0)

[Christian Hergert <chergert src gnome org>]

commit aaa0a3ade2e0708f2eafc0b963d9e9d7e54fc108
Author: Christian Hergert <chergert redhat com>
Date:   Sat Sep 17 14:36:54 2022 -0700

    Release libpanel 1.0.0 (GNOME 43.0)

 NEWS        | 18 ++++++++++++++++++
 meson.build |  2 +-
 2 files changed, 19 insertions(+), 1 deletion(-)
---
diff --git a/NEWS b/NEWS
index 8a8b695..39f91e2 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,21 @@
+libpanel 1.0
+============
+
+ * Documentation updates
+ * Translation updates
+ * Various dock improvements to grabs
+ * Switch to GBindingGroup
+ * PanelSaveChangesDialog implements the new GNOME save workflow
+ * PanelPosition has been added
+ * Improvements to PanelFrame
+ * PanelDockPosition has been renamed to PanelArea
+ * PanelDockSwitcher has been renamed to PanelToggleButton
+ * Various convenience API additions
+
+This somewhat commits to API stability, but we do expect to iterate
+on API/ABI in upcoming releases, and therefore 1.0 ABI may be short
+lived so that we are not stuck maintaining it forever.
+
 libpanel 1.0.alpha1
 ===================
 
diff --git a/meson.build b/meson.build
index cae140e..331e31d 100644
--- a/meson.build
+++ b/meson.build
@@ -1,5 +1,5 @@
 project('libpanel', 'c',
-          version: '1.0.alpha2',
+          version: '1.0.0',
     meson_version: '>= 0.60',
   default_options: [ 'warning_level=2', 'c_std=gnu18' ],
 )