[REF] base, ir_sequence: refactored as discussed during code review + removed deprecated ir.sequence.type object
[REF] base, ir_sequence: refactored as discussed during code review + removed deprecated ir.sequence.type object
[FIX] base, ir_sequence: used a better name for contextual use of date for sequencing
[REF] base, ir_sequence: improved the unit test related to ir.sequence.date_range