Apply scrollback patch

.suckless/st/config.h

@@ -191,6 +191,8 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,              XK_Y,           selpaste,       {.i =  0} },
 	{ ShiftMask,            XK_Insert,      selpaste,       {.i =  0} },
 	{ TERMMOD,              XK_Num_Lock,    numlock,        {.i =  0} },
+	{ MODKEY|ShiftMask,     XK_K,           kscrollup,      {.i = -1} },
+	{ MODKEY|ShiftMask,     XK_J,           kscrolldown,    {.i = -1} },
 };
 
 /*