parse_arguments

[seanieb]

• The "-k" argument is confusing. It's not intuitive what is the default action actually is.
  I would recommend that the default is always to keep a copy on Put.io's servers after download and the user has to be explicit to delete from put.io after download.
• Another argument that would be worth having would be -n --newonly. Don't download existing items, only download new items. Ala Put.io's RSS feed feature "Don't process the current feed, only download new items".

[posborne]

Both of these requests seem reasonable. The -k change should be relatively straightforward and isolated to argument parsing.

Downloading only new items (-n) is also possible but requires some additional changes in the core logic. The assumption would be that this option would need to be passed each time the daemon is started in order to avoid downloading items already present.