Developer - The Undermine Journal
I had a news post about this on the front page for 7 days a couple days ago. BMAH data was abruptly halted due to a hardware issue, and despite my efforts, I could not get the system running reliably again. I doubt Blizzard will include BMAH data in the API anytime soon. So, BMAH data and notifications are removed indefinitely.
I would like to stress that BMAH support removal is not due to any choice on my part. Stuff broke without warning, and couldn't be fixed.