Version: 1.9.0

* engine based keys
* use SignedData for authenticated variables

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/include/version.h b/include/version.h
index 6948db8..8ad377a 100644
--- a/include/version.h
+++ b/include/version.h
@@ -1,4 +1,4 @@
-#define VERSION "1.8.1"
+#define VERSION "1.9.0"
 
 static void
 version(const char *progname)