[gimp-macos-build] Update changelog

[Alex Samorukov <asamorukov src gnome org>]

commit 857a1d5c12e7b2f9002ca839f80cb9e9662ed382
Author: Oleksii Samorukov <oleksii_samorukov mckinsey com>
Date:   Tue Jan 14 23:24:00 2020 +0100

    Update changelog

 ChangeLog.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/ChangeLog.md b/ChangeLog.md
index e9e2d7f..038ebf8 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -2,7 +2,9 @@
 
 ### not released yet
 
-- Dependency updates: openjpeg, gexiv2, python2, lcms2, libtiff, ghostscript, poppler, glib
+- Fix Print Preview dialog on the recent macOS versions (GTK issue)
+- Fix `Cmd+H` system hotkey in the GIMP window and startup warning
+- Dependency updates: openjpeg, gexiv2, python2, lcms2, libtiff, ghostscript, poppler, glib, libheif, pango
 - Enable matting levin engine support using macOS `Accelerate` framework and SuiteSparse
 - LibHEIF updated to 1.6 to fix crash on save
 - Performance improvements in LibHEIF save due to enabled ASM in x265