@raiwa I send you a pull request for the missing German core files translation. I also had a quick look at the package to make sure there is nothing missing before we officially upload it. This is what I found; The modified core files Spanish language file is in English and it is missing the modules/boxes/ language file Did you remove the Auto Expire and Auto Credit links in the admin area?
If yes, then we could remove the two cron script files right? (customers_points_credit.php and customers_points_expire.php) Other then that all looks good on my end and I think we can release it to the world officially.
Anything arise we can update it and upload a new version again. Just for safety we should maybe keep the github alive for now till we can say that it is 100% bug free.