Bump version to 0.64

Change-Id: I0668d201b0cccf7a16e3ba9dc04e0bcef5b6d12e
diff --git a/script/korapxml2krill b/script/korapxml2krill
index cc0490a..d740eef 100755
--- a/script/korapxml2krill
+++ b/script/korapxml2krill
@@ -178,7 +178,7 @@
 # - Improve core count logging.
 # ----------------------------------------------------------
 
-our $LAST_CHANGE = '2025/07/15';
+our $LAST_CHANGE = '2025/11/05';
 our $LOCAL = $FindBin::Bin;
 our $KORAL_VERSION = 0.03;
 our $VERSION_MSG = <<"VERSION";