SSB-DB2

SSB-DB2 is a new database for secure-scuttlebutt, designed as a replacement for the older `ssb-db`. Currently at version 8.1.0, it offers significant architectural changes aimed at improving performance and flexibility. Key differentiators include using `bipf` for data storage, replacing `flume` with `jitdb` for specialized indexes, supporting browser environments via `ssb-browser-core`, and enabling efficient partial replication. It has expanded capabilities beyond `ssb-db`, featuring deletion and compaction, support for customizable feed and encryption formats (defaulting to `ssb-classic`), and a powerful query language based on composable JavaScript functions. SSB-DB2 operates as a `secret-stack` plugin, registering within the `db` namespace, and is optimized for modern Node.js environments (>=16).