Add support for trackerStats object, startDate, peersConnected

[bilalghouri]

• Added trackerStats object which returns: host, leecherCount, seederCount, lastScrapeResult, lastAnnounceResult "lastAnnounceResult" is an important feature that was missing. It returns the status of the tracker which the Tracker class does not return. It returns Success if the last announce attempt was successful or any error message returned by the tracker upon announce request. i.e Connection failed, Unregistered torrent, IP not registered with the tracker (in the case of private trackers) etc More stats variables can be added to the return object easily upon request.
• Added startDate integer: unix timestamp of when the torrent was started
• Added peersConnected integer: number of peers connected

[kleiram]

Hi there! Thanks for the PR! I added some comments to the code, if you could fix these issues that'd be great! Also, if you'd add tests that would be really good as well. Thanks again!

[bilalghouri]

Hello, if you could merge the pull request any time soon, that would be wonderful.

[kleiram]

Hi there, if you could some (rudimentary at least) tests, I'll merge them!

[bilalghouri]

Tests have been added. Please check. Thanks

[bilalghouri]

Hello, Sorry to be asking again, but can you please merge it so I can keep my build up to date on the servers?

[kleiram]

Merged now, the tests seemed to keep failing earlier.