* Improvement - Full error log for gcal sync errors.
* Improvement - WooCommerce 3.9.0 compatibility.
* Fix - Do not sync back cancelled events as cancelled appointments.
* Fix - Staff can sync to same google calendar, even if it doesn't make any sense.
* Fix - No preference shows no availability when staff has no rules.
* Fix - No preference does not show rules correctly, when not all staff have rules.
* Improvement - WooCommerce 3.9.0 compatibility.
* Fix - Do not sync back cancelled events as cancelled appointments.
* Fix - Staff can sync to same google calendar, even if it doesn't make any sense.
* Fix - No preference shows no availability when staff has no rules.
* Fix - No preference does not show rules correctly, when not all staff have rules.