[$] Offline applications with Earthstar

Earthstar is a privacy-oriented,offline-first, LGPL-licensed database intended to support distributedapplications. Unlike other distributed storage libraries, itfocuses on providing mutable data with human-meaningful names and modificationtimes, which gives it an interface similar to many non-distributedkey-value databases.Now, the developers are looking at switching to a new synchronizationprotocol - one that is general enough that it might see wider adoption.