Whatsapp have finany increased its group members capacity from 100 to 256, maybe due to group admin's complaints on their forums or it might also be part of the new development and  reconstruction of the application.remember last month, they made it free forever for members whereby you don't have to renew by paying an amount.
This is a very good and welcome development, as group admins would now be able to add more than 100 members without removing some..
Looks like this year is going to be a year of surprises and new developments.

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