implemented reapply for re-applying the tagging rules during runtime, Mod-r

config.def.h

@@ -47,6 +47,7 @@ Key keys[] = {
 	{ MODKEY,			XK_h,		setmwfact,	"-0.05" },
 	{ MODKEY,			XK_l,		setmwfact,	"+0.05" },
 	{ MODKEY,			XK_m,		togglemax,	NULL },
+	{ MODKEY,			XK_r,		reapply,	NULL },
 	{ MODKEY,			XK_Return,	zoom,		NULL },
 	{ MODKEY,			XK_Tab,		viewprevtag,	NULL },
 	{ MODKEY|ShiftMask,		XK_space,	togglefloating,	NULL },