Fix cron time This is a first attempt at fixing $cron_time. It's currently impossible to use the automatically generated timings. This would fix #4 . See merge request !4
update README to be more accurate for how the module actually works See merge request !3
This'll make it configure the cron job to a 30mins interval randomly displaced within the hour. It's still possible to set $cron_time to a full cron time spec to set run times manually.
with the current code it's impossible to use the automatically generated cron time spec since to get there you need to set $cron_time to false, and this one in turn gets converted to an integer. This throws an error. To fix this, we'll base the second timing to be 30mins after the first one.