Adds the command `imdl` torrent verify` to verify the contents of torrents.
This implementation is extremely naive. It does successfully verify torrents,
but it will produce unsatisfying results when a torrent fails verification. In
particular, it won't give any information about which pieces in a file were
corrupt.
type: added
By default, skip the following when creating a torrent:
- Junk files, like `Thumbs.db`
- Files and directories that begin with a `.`
- Files and directories that have the OS or Windows hidden attribute set
- Symlinks
These can be overridden with, respectively:
- `--include-junk`
- `--include-hidden`
- `--include-hidden`
- `--follow-symlinks`
type: changed
