v0.4.0

• Stores now only accept one argument, which are the options.
• When calling model.delete(), it will now do a non-optimistic delete by default, meaning the model will only be removed from the store (if any), when the request is finished. Add { immediate: true } for the old behavior.
• Add onRequestError method to BinderApi, which gets called for every request error. This is useful if you want to show a notification if a request fails.
• Return this for model.parse() and store.parse() methods.
• primaryKey on a model is now static.