Drag and Drop for opening files is broken in OS X Yosemite and greater

[mgeraci]

I recall that when I first installed Tag 0.4.1, I could drag files onto the main window to open them. That no longer works, and I'm pretty sure it stopped working after Mavericks (though I'm not positive).

I can see that there's not a lot of active development going on with Tag these days, but while I'm here I do want to let you know that I use it every week when I add new music to my flac collection, so thank you!

[sbooth]

Thanks for reporting this issue. You're correct that Tag is not actively developed anymore but if you submit a PR with the fix I'll be happy to merge it.

[mgeraci]

I've never worked on a desktop app before, but maybe this will be a good excuse to do so! I'll let you know if I end up getting to this.