Jan 10, 2016 에 업데이트되었습니다
April 1, v0.3.2: made "add" and "refresh" buttons semi-transparent and moved them in the middle
March 31, v0.3.1: refresh after adding happy moment, and hide unnecessary elements
March 30, v0.3: random *happy* background images, nicer overall design, new button to switch to a random happy moment
March 16, v0.2: first version, primitive and ugly, for family and friends only
