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- POST-ing to a URL which does not exist will now create the destination as a ghost node, and create a child node inside of it. Previously, this would result in a 404.
- Memento timestamps may no longer be specified when creating a memento.
- Mementos cannot be deleted.
- ActivityStream Actors, in event notifications, now correctly contain a single type rather than a list of types.
- Transactions API...
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Upgrading to the Alpha
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