* Expose a public Torrent type bound to a given client or similar to work with common per-torrent operations.
* Split scraping and announcing on DHT into separate routines.
* Ping nodes that stop being good.
- * Merge duplicate magnet data.
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+ * Merge duplicate magnet data.
+ * Cache completed torrent files from magnet.
+ * Don't download the last piece preemptively because it appears partial.
+ * Make use of sparse file regions in download data for faster hashing.
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