Wip/feeds

Support for IFTT, rss, atom:

The path to add to your website to create the url is something like this: `/api/v1/entries.atom` or `/api/v1/entries.rss`.

This is a pull request to update your `develop` branch to the version of the code that includes the experimental support.  In azure, you should be able to select a different branch, the `develop` branch after merging this pull request to try this code.  You can also try creating a second site and using the `develop` branch in order to try this out without affecting your existing site.