Release v2.6.0

What's Changed

• Partial support for library override workflow / ライブラリオーバーライドワークフローに部分対応 by @One-sixth in #64
  • Add patching to all mmd_tools propeties by @UuuNyaa in #65
  • Contributors: @nagadomi

Full Changelog: v2.5.1...v2.6.0