copy vertical bar from taffybar source
add a set-colors function to vertical bar
add a percent bar widget

reads IO (fg, bg, percent), and provides utils for changing colors at percents > 1.0
implemented volume in terms of percent bar
implement brightness with percent bar
remove percentbar, replaced with percentbarwidget
remove dzen printers that have default widgets in taffybar
converted ekiga taffybar widget
implemented mic mute printer as a red/black "m"