patch 7.4.1911
Problem:    Recent history lines may be lost when exiting Vim.
Solution:   Merge history using the timestamp.
diff --git a/src/vim.h b/src/vim.h
index 33ed941..4615f07 100644
--- a/src/vim.h
+++ b/src/vim.h
@@ -1076,6 +1076,9 @@
 #define BARTYPE_VERSION 1
 #define BARTYPE_HISTORY 2
 
+#define VIMINFO_VERSION 2
+#define VIMINFO_VERSION_WITH_HISTORY 2
+
 typedef enum {
     BVAL_NR,
     BVAL_STRING,