Unicode support.

[ioreshnikov]

I looks like wmfs2 is not unicode friendly.
For example, setting window title in the xterm via echo -n "\033]0; привет \007" results in completely different and completely unreadable title. This behavior is consistent with every window that has unicode title, even chrome's title with this github page fails to properly draw dot character.

[nkoehring]

Same in the bar. I tried to set unicode characters for tags so on and it seems to handle them ASCII alike.