Fix Past OMEXML Plane Handling

The previous v3 and below OMEXML.py continues to catch us. This patch should alleviate some issues created by it's functionality in the current reader by fixing out-of-order metadata information prior to reading.

What's Changed

• bugfix/add-logic-to-ensure-OME-XML-plane-elements-occur-last by @Nicholas-Schaub in #385

New Contributors

• @Nicholas-Schaub made their first contribution in #385

Full Changelog: v4.6.2...v4.6.3