Narrow responsibilities in datetime related types

[phansys]

Q	A
Type	improvement
Fixed issues	n/a

Summary

• Deprecated passing other type than DateTime|null to DateType, TimeType, DateTimeType, DateTimeTzType and VarDateTimeType;
• new DateTime() and new DateTimeImmutable() are used as replacement to date_create() and date_create_immutable() procedural functions.

[greg0ire]

I think you are doing this because in case a user wants to save the timezone but shoots themselves in the foot by picking the wrong type, is that it?

[phansys]

I think you are doing this because in case a user wants to save the timezone but shoot themselves in the foot by picking the wrong type, is that it?

Yes. That's the main goal IMO.
Sorry, I answered by inertia based on my other PRs.
In this case, the goal is to avoid false expectations when using \DateTimeImmutable in types that are intended for \DateTime.

[greg0ire]

Thanks @phansys !