Hey guys, I just released 0.3.0 which is quite a big one 
Demo is still available here.
Here is the changelog:
- change (breaking!): entries must now be written as
.exsfiles. Otherwise, they will be ignored. - change (breaking!):
variationshave been rebranded asstories. - change (breaking!):
live_storybook/2must be set in yourrouter.exoutside your main scope
and outside your:browserpipeline. - feature: new Playground tab to play with your components! To use it, you must declare attributes in your component entries.
- feature: you can opt-in iframe rendering for any of your components with
def container, do: :iframe - improvement: storybook is now fully responsive.
- improvement: meaningful errors are raised during compilation if your entries are invalid.
- improvement: improved storybook CSS isolation. It should no longer leak within your components.
- improvement: stateless component entries no longer require defining a
component/0function. - documentation: new
sandboxing.mdguide.
Big thanks to @glennr, @LostKobrakai and @seb3s for their contribution 
