smart_date 8.x-2.0

Changes since 8.x-2.0-rc3:

• Issue #3114690 by sjerdo, mandclu, cajewell: Recurr\Exception\InvalidRRule
• Various CSS tweaks, especially to provide a more consistent experience in Claro and Adminimal

This release fixes an error introduced in the last release, and has styling tweaks to provide a more consistent experience across Seven, Claro, and Adminimal.

This is the first stable release for the 8.x-2.0 branch of Smart Date. The key new feature in the 8.x-2.x branch is recurring dates, with an interface to manage instances, including the ability to reschedule or cancel individual instances. If no end date is specified, instances will be generated out to a configurable amount of time, with a cron job to generate additional instance on an ongoing basis. There is also a specialized output formatter to only show a configurable number of past and upcoming instances per recurring date, along with the compact text for the recurrence rule itself. Other new features include the ability to manually specify a timezone for a date, and the ability on output to list the start and duration instead of the start and end times. The 8.x-2.0 adds additional columns to Smart Date values, so it's necessary to run database updates after upgrading.