Mike Fährmann ebe9b0a04c
another attempt at downloader retry behavior
This commit changes the general behavior from
'Retry on every exception and abort on DownloadError' to
'Only retry on DownloadRetry exceptions and abort on every other one'

The previous version would have retried on several states which
would have no chance of ever succeeding (invalid URLs, etc.)
2017-12-07 15:31:14 +01:00
..
2017-01-30 19:40:15 +01:00