Torrt

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* Fixed another rutracker login issue.
+ QBittorrent RPC support.

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+ Added kinozal.tv tracker.
+ Basic Python 3 support.

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* Fixed rutracker login issue.

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+ Deluge plugin updated
+ Rutor plugin updated

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* rutracker mirror list updated
* nnm club mirror list updated
+ Implemented mirror domain availability discovery

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* IMPORTANT: Torrent parsing switched from `libtorrent` to `torrentool`.
+ CLI: launcher script is now crossplatform.
* CLI: `torrt walk` output made less verbose and mode structured.