[1] Unify old and new features
- time_series_mapper_index_time.py can use local time config
- support DatetimeRangeWithTZColumn time config in time_zone_converter.py
- generalization between converter, localizer, and mapper.
[2] Allow single time zone conversion to accept wrap_time_allowed
[3] Allow feature to append or replace original time cols with mapped time cols
[4] Use composition where possible instead of inheritance.
[1] Unify old and new features
[2] Allow single time zone conversion to accept wrap_time_allowed
[3] Allow feature to append or replace original time cols with mapped time cols
[4] Use composition where possible instead of inheritance.