v0.6.0

Changelog

7be82c0 add tracker test to metainfo
8f6449a do not disconnect on invalid cancel messages
91b3287 do not log completion on startup
5fcf70c do not log critical errors twice
1579353 do not log error for duplicate peer ids
832bc39 do not log invalid protocol errors
8701e92 drop invalid cancel messages
a7b161c filter control chars in torrent names
189c097 less error log for not fast clients
9d4e3b8 loosen metadata parsing
88067fc reduce default parallel reads
6c919ff refactor
351c6f2 remove unused fields from metainfo dict
a80c7c2 send reject message if request is cancelled