Support end_date for the update proposal operation changes in hf25

Support end_date for the update proposal operation changes in hf25 (see hive!165 (merged))

mentioned in merge request hive!165 (merged)

added Review label

No need to merge this until hive!165 (merged) is merged

approved this merge request

added 1 commit

• 43c5f748 - Update the serializer to take into account the future_extensions

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@emrebeyler could you reapprove ?

@mahdiyari I don't have write access please merge it when you have the time, thanks :)

Sorry, I wasn't around for a few days. Is it tested?

Yes :)

mentioned in commit 867abfeb

merged