systemd generator that provides cron daemon & anacron functionality

 This is a generator that dynamicaly translates /etc/crontab,
 /etc/cron.{d|hourly|daily|weekly|monthly|yearly}/*
 and user cronjobs into systemd .timer & .service units.
 Please notice this package provide a different set of features
 than Vixie-cron; trying to remain as simple as possible.
 By example, to avoid to run process through a wrapper,
 but have instead systemd run those directly,
 it only send mails on error, including only a small blurb
 from the Journal; but doesn't send the full output of processes.