* add multiple addresses in request structures and frontend parsers
* move per-ip peer fetch/store from storage to internal hooks
* fetch/store both v1 and v2 info hashes
* migrate torrentapproval to list storage
* add initial support for torrent file storage (watch directory with fsnotify)
* replace frontend/http/bencode package with github.com/zeebo/bencode module
* sanitize code (fix warnings)
TODO:
* parse torrent files to get hashes,
* watch directory event types
DON'T use for now