Squashed 'app/' changes from a891824..0aad2bc

0aad2bc min height, README

git-subtree-dir: app
git-subtree-split: 0aad2bc94a1d825ce34cf5eb9d43043c7dc54cda
Merge commit '12a19b3c95922545f17d43908b0ae1fb67592a32'