Update mocha to 1.20.0 and unexpected to 3.2.0.
Update optipng to 0.0.6.
Update inkscape to 0.0.5.
Update jpegtran to 0.0.6.
Update svgfilter to 0.3.2.
Update pngcrush to 0.0.5.
Update pngquant to 0.1.5.
0.1.19