Track download health, and don't leak FDs when redispatching segments.

Fix (or avoid) race condition when rapidly pausing and resuming.

Be a little more repair file agnostic.

Add basic travis.yml

Make sniffer unit tests match actual API...

Update postprocessor API

Complicate par2 handling a little.

Add DefaultAtoi convenience function.

Let the grabber know we found par2 files at creation time, too.

Fiddle with API for marking files done or par2

Whoops. Add magic sniffer that's been sitting untracked by git.

Use io.MultiWriter rather than writing to a bunch of things manually.

Clean up yDecode block a little

Add rudimentary repair and extract functionality.

Make filetype sniffing a little less lame