~/.config/awesome/rc.lua: Log tag switching.

This will make it possible to track the actual time spent working on
"real" projects and when I just read stuff. :)

.config/awesome/rc.lua

@@ -377,6 +377,10 @@ client.connect_signal("unfocus", function(c) c.border_color = beautiful.border_n
-- My own stuff
screen[1]:connect_signal("tag::history::update", function()
	os.execute("/home/lu/.bin/events tag '" .. awful.tag.selected(1).name .. "'")
end)
client.connect_signal("focus", function(c)
	os.execute("/home/lu/.bin/events focus '" .. c.name .. "'")
end)