Strip off seconds from strings.
Prepare code to easily provide a structured data to allow integrators to
format timing differently.
Provide a method to easily check if an opening hour is only valid for a
single day.
Relates: #10185
Opening hours are filtered. Opening hours from the past are no longer
available.
Opening hours are sorted. Newer opening hours are shown last.
Relates: #10185
The import resulted in an exception if there was an array of types
instead of a string.
Both situations are now handled and API of models is kept.
Existing imported data is also kept.
That's necessary as models grow.
Added features should be tested to not break with future changes.
The tests revealed an existing error in fallback which got fixed to make
new test pass.
Relates: #18
