Add Release Note for 1.4
New layout test
Comment out the test

Test failed at TravisCI
Add PackageList#new_items
Mix add & update
FILTER_BY_PACKAGE_NUM : 5 -> 8
Add translation of :update_news, :add_news
Tweak time format
Exclude 'Update' at the same time as 'Add'
Refactor
Merge branch 'feature/new-home' into develop
Centering top page
Change checkout url
Bump 1.5
Merge branch 'develop'