Add global error handler, ask for .torrent association only on first usage, and improve XML serialization.
Merge remote-tracking branch 'remotes/hexf/master'
Check the existance of the download directory when adding magnets.
TorrentState can't even be DoNotDownload.
Unifies event handling for TorrentManagers, plus various changes.
Added primitive RSS support.
Merge pull request #23 from diantahoc/master

Global error handler and possible bug fix.