FIX: ensure the onebox route is only allowed to logged in users
FIX: only allow 1 outgoing onebox preview per user
FIX: client should only do 1 preview at a time
FEATURE: new 'max_oneboxes_per_post' site setting
FEATURE: change onebox whitelist to a blacklist
PERF: debounce the loading of oneboxes
PERF: improve perf of mention links in preview
FIX: sort loading of custom oneboxer
Régis Hanol
Guo Xiang Tan
Robin Ward