Support import Recurring event with feeds

Unfortunately, the short answer is that the support for importing recurring dates using Feeds doesn't yet exist. Smart Date currently includes a Feeds plugin for mapping incoming data to Smart Date fields, but there isn't yet a plugin to allow mapping data to Smart Date Rule entities.

The Smart Date Recur submodule does make use of the Recurr library, which in theory should be able to parse the incoming RRULE value and export out the individual parts needed to create the Rule object that should be referenced for each of the individual values. I'll point out that there is a long-standing issue on Feeds ( ✨ Add a mapping target to media field Needs review ) to allow it to create Media entities and the code changes seem almost entirely focused on creating the Feeds target class. So hopefully there wouldn't be a lot more needed in Smart Date than the new Rule target class, but I'm sure there will need to be some testing to validate that assumption.