[gimp/gimp-2-10] NEWS: update.

[Jehan <jehanp src gnome org>]

commit 18b62f1af4d1e4914088d0f626c7fd30510a2969
Author: Jehan <jehan girinstud io>
Date:   Thu Jul 30 12:22:29 2020 +0200

    NEWS: update.

 NEWS | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
---
diff --git a/NEWS b/NEWS
index 25998e03f3..1973f81162 100644
--- a/NEWS
+++ b/NEWS
@@ -64,6 +64,27 @@ Plug-ins:
     to know the right compression from other flags. This allows to
     recover invalid DDS files exported by other software.
 
+Debugging:
+
+  - Add progressive performance logs: progressive logs contain complete
+    information after each recorded sample, by writing partial address
+    maps at each sample, containing all new addresses introduced by the
+    sample.
+    This allows recording complete logs even in cases where they can't
+    be properly terminated, such as when GIMP crashes or freezes in the
+    middle of the log.
+    Progressive logs are disabled by default, since they potentially
+    increase the sampling cost. They can be enabled through a toggle
+    in the log file-dialog, or through GIMP_PERFORMANCE_LOG_PROGRESSIVE
+    environment variable.
+    Performance log viewer can now process progressive performance logs
+    too.
+  - Allow controlling performance-log parameters through the UI.
+
+Build:
+
+  - new `distcheck` step in Continuous Integration.
+
 Overview of Changes from GIMP 2.10.18 to GIMP 2.10.20
 =====================================================