How can I sort entries by a custom field in the CP, Craft 3? I have an events section with a custom field of eventDate and it would be very helpful to editors to have them listed in event date order.
In Craft 2 I used the plugin CP Sortable Custom Columns by Mikkel Rummelhoff but he hasn't ported it to Craft 3 and may not, he says.

I would have thought this option would be useful to many people, so has anyone got any suggestions as to how to achieve it, I'm not a plugin developer myself.
Craft 3.2 beta adds support sortable custom fields.