remove unnecessary return
change "userkey" to "userKey"
update model files by recreating from latest gii version
update comments and clean up code
remove guest role
change default parameter User::setLoginIpAndTime($save = false)
update User component and CopyController to psr-2
fix copy command in readme docs
update admin controller/views by recreating from latest gii version
change timestamp fields to filter using mysql like
remove unnecessary use statement and update comments
update Module file and controllers to psr-2
remove viewPath from Module
update comments and refactor code a bit
update models to psr-2 refactor a bit
update titles, html classes, and general code style in view files
change and/or operators to &&/||
remove _ prefix from name of protected function
move emails from /mails to /mail
update mail template (copy from yii2-app-basic)
update docs about /mails to /mail
update related profile code in UserSearch

(following guide at https://github.com/yiisoft/yii2/blob/master/docs/guide/data-grid.md)
update comments
add setFrom() to emails (fix #13)