Updating is optional. But if you want to be able to use all the available features on Minecraft 1.15, then you need to update.

Changelogs:

• Now has full support for Minecraft 1.15
• Exact name no longer required to send a gift -- incomplete name is accepted.
  • You don't have to put in "TrekkieEndermom" anymore. "Trek" would be sufficient now.
• Code clean-up
  • I've tested the plugin after the clean up to make sure nothing broke. However if you do see any unintentional behavior, please report them to me!