[xmlunit/xmlunit] 885da9: add section for next milestone

[Stefan B. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/xmlunit/xmlunit
  Commit: 885da97181ad6c7db4e97c2411b5ecc0f1160bcf
      https://github.com/xmlunit/xmlunit/commit/885da97181ad6c7db4e97c2411b5ecc0f1160bcf
  Author: Stefan Bodewig <ste...@fr...>
  Date:   2020-03-08 (Sun, 08 Mar 2020)

  Changed paths:
    M RELEASE_NOTES.md

  Log Message:
  -----------
  add section for next milestone