Since releases aren't exactly happening on a regular schedule, you are encouraged to use the latest code. webassets is pretty well tested, so as long as the build status icon above remains a reassuring green, you shouldn't run into any trouble.
You can download a tarball of the development version, or install it via pip install webassets==dev.
For development, to run all the tests, you need to have at least Java 7 installed (required for example to run the Google closure filter).
Install Python requirements (preferable in a virtual env):
$ pip install -r requirements-dev.pip $ pip install -r requirements-dev-2.x.pip
Install other requirements:
Run the tests: