Fixed PNG tRNS chunk handling for grayscale images.
diff --git a/ChangeLog b/ChangeLog
index fee8e54..4a3fb7f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-07 6.6.3-1 Glenn Randers-Pehrson <glennrp@image...>
+ * The PNG decoder failed to handle the tRNS chunk properly for grayscale
+ images where the png bit_depth was not the same as the quantum depth,
+ and the transparent color was not black.
+
2010-07-01 6.6.3-0 Chris Madison <madisonblu@gmail...>
* Pinging the DJVU image format no longer faults.
* Check for time-limit-exceeded in only one thread.