Ignore Medium's comments

[khaosdoctor]

Medium treats comments as blog posts. This way all comments appear on the feed, but they don't have categories as normal articles do:

Adding a condition to check if the siteUrl contains the medium.com/feed keywords, if so, checks if the item contains at least one category. If it does, then continues, if not return empty.

[khaosdoctor]

Added some better filtering instead of doing it in the map

[gautamkrishnar]

@khaosdoctor thanks a lot for the fix