Possibility to use window titles instead of class names

With my window manager using class names did not work correctly. Two visible Firefox instances were found, I think it was window + tab) and refresh them failed. This was a problem for both Firefox and Chromium, I guess my window manager did something wrong.

I switched to title bar search with "Mozilla Firefox" and now it works fine for all of my three browser (Firefox, Chromium, Opera).

You can now choose between classnames (default) and title bar (alternative). You can also set different title bar names, e.g. if your Firefox is not called "Mozilla Firefox" in the title bar.