[gnome-chess] Update NEWS

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 53f4aea057c84db78b843a882b70de903e98acff
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Dec 6 12:07:24 2020 -0600

    Update NEWS

 NEWS | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
---
diff --git a/NEWS b/NEWS
index cda9a7c..27658ab 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,24 @@
+- Rework promotion type selector to avoid GTK warnings (#19)
+- Hide timers in untimed games (#39)
+- Custom PGN tags are now prefixed with X-GNOME
+- Promotion type selector now fits screen in narrow mode
+- Use info bar, not header bar subtitle, to display extra status messages
+- Rename Save to Save As, and display a separate Save action
+
+3.38.1 - December 6, 2020
+=========================
+
+- Try to make all chess engines easier on Easy and Normal difficulty (#18)
+- Fix claim draw dialog appearing every turn after threefold repetition (#47)
+- Fix bogus "computer player is confused" errors in several situations:
+  - When the engine is stalemated
+  - When starting a new game while the game is paused, if the engine has moved during pause (#49)
+  - When resigning immediately before the engine moves (#49)
+- Fix file chooser defaulting to /run when game is saved for a second time under flatpak (#53)
+- Fix detection of stalled chess engine in untimed games (#54)
+- Fix claim draw dialog appearing before a forced draw
+- Fix ChessScene removing invalid GSource
+
 3.38.0 - September 11, 2020
 ===========================