api: users/user_stats returns "registered"
bundle update
app: refactor users/discovered_(by|users)
app: reorganize User#profile_image_url*
web: fix User#profile_image_url's SystemStackError
web: remove unnecessary XML declaration
web: about#index: fix Twitter share button's data-lang
web: sidebar(user): simplify
update README.md
web: apidocs: hide deprecated endpoints on apidocs sidebar
refactor