[new] New shortcode `[iconic-wds-reserved-slot]`
[new] Add new 'iconic_wds_same_day_cutoff' and 'iconic_wds_next_day_cutoff' filters
[update] Compatibility with CheckoutWC
[update] Ensure checkout doesn't proceed when no shipping method is selected
[update] Display "no slots available" message instead of empty reservation table
[fix] Incorrect timeslot label when slot duration is zero
[fix] Avoid duplicate dates in reservation table
[fix] Use "all" minmax method when no selected days
[fix] Fix row ID issue which can replace "Sunday" with specific date in time slot settings
[fix] Fix incorrect Max selectable date issue
[fix] Correct same/next day calculations based on local time
