Update Rommel Feria's entry

[devrom]

remove Twitter add Mastodon add Mastodon add Mastodon

[aalmiray]

Hmm,the data file supports a single mastodon entry at the moment. Perhaps the format should support multiple entries per social entity. I have to think a bit how to make this work without causing too much disruption.

[aalmiray]

I've removed the link to Twitter and added the Mastodon link with most posts/followers for the time being.