[xmlunit/xmlunit.net] 9e4e1a: enable debug output

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

  Branch: refs/heads/main
  Home:   https://github.com/xmlunit/xmlunit.net
  Commit: 9e4e1a7cb74b51e629d41475aff386db3efaf8e6
      https://github.com/xmlunit/xmlunit.net/commit/9e4e1a7cb74b51e629d41475aff386db3efaf8e6
  Author: Stefan Bodewig <ste...@fr...>
  Date:   2022-01-23 (Sun, 23 Jan 2022)

  Changed paths:
    M appveyor.yml

  Log Message:
  -----------
  enable debug output