The only redeeming features are smallness, speed and compatibility.
tested and known to work in ie 6+, firefox 3.6+, safari 4+, chrome 14+, opera 10+ (firefox 3.0 doesn't support fillText, so it is unsupported)
Install nodejs.
npm install -g grunt-cli
npm install
grunt publish
The publish folder should contain compiled files
Run test/index.html. Or ...
grunt test