Squashed 'APIHeartBeat/' changes from 16c23d2..285fe5f

285fe5f prod-APIHeartBeat: Updated prod version of APIHeartBeat at version 0.3.

git-subtree-dir: APIHeartBeat
git-subtree-split: 285fe5f0209c391f8402a6c38e2f9058ad0cb319