I have been using different Sharepoint.Client nuget packages because of different framework targets and I am unable to find any resource describing the differences between them.
But more importantly some are missing SPUtility class. Seems like a shoddy design but has some useful methods like the one I am using
SPUtility.CreateISO8601DateTimeFromSystemDateTime(DateTime)
My question is does anyone know where I should be looking for the same functionality or is it dead and buried?