segmentio/analytics-ruby — pull request #58 by hadees (2014-06-11 05:27:40+00:00)
Title: isoify dates for the group method

This make sure dates are converted in the group method just like they are in identify. This is an attempt to fix #56 but it doesn't look like the whole solution since Intercom is still getting bad data. Is there a server side fix that also need to be done?