added togglefloat to hg tip (i consider this useful for some cases), using MODKEY-Shift-space as shortcut

view.c

@@ -200,6 +200,14 @@ restack(void) {
 	while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 }
 
+void
+togglefloat(Arg *arg) {
+	if (!sel)
+		return;
+	sel->isfloat = !sel->isfloat;
+	arrange();
+}
+
 void
 togglemode(Arg *arg) {
 	arrange = (arrange == dofloat) ? dotile : dofloat;