Add support for JSON feeds

[noClaps]

Is your feature request related to a problem? Please describe.
My blog, along with others like Jim Nielsen's use JSON feeds instead of XML-based feeds. This is because they're a lot easier to create and manage than XML-based feeds.

Describe the solution you'd like
So far, only a handful of feed readers have added support for JSON feeds. It would be nice if Twine also added support for it. You can read the specification here.

[vanniktech]

Isn't this dead? The last activity was over 4 years ago.

[noClaps]

RSS specification hasn't been updated since 2009 and Atom since 2005, yet those aren't considered to be dead.

I don't think the specification really needs to change for it to still be useful.

[vanniktech]

I've never seen this and none of my users ever requested this to be supported which is why I had assumed that it's dead.

[noClaps]

It's not as popular as RSS or Atom, I'll admit. But as someone who's got a blog, a JSON feed is significantly easier to set up than an RSS or Atom feed. In fact, you can see my implementation here.

Also, popular apps like Reeder, NetNewsWire and Newsblur already implement it. Unfortunately, Reeder and NNW aren't available on Android, and Twine's UI is much nicer than Newsblur's, which is why I'd like Twine to add this feature.