Import OPML from url

[rudism]

It would be nice if Feeder had the ability to import feeds from an OPML given a url to the OPML file.

My use case is I maintain an OPML file of categorized feeds that I update somewhat regularly, and often want to re-import it into Feeder to get the new feeds added since the last time. Having to first download the OPML in a web browser every time works OK, but cutting out the browser and having Feeder download it directly would be awesome.