Bug fixes

- #3095208: Selecting no pre-load style causes transformDimensions() error.

Issue #3061577: New plugin based metadata mapping thanks to @seth.e.shaw
Issue #3091638: Bug fix - switching Metadata Mapping Methods causes LogicException

Don't forget to run update.php after overwriting the code.

Changes since 8.x-1.4:

• More spelling fixes
• Adjusted formatting of date start/end to work

migration_tools 8.x-2.2 11-20-2019
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* Issue #3095810 Redirect: Replace %20 with space on source.
https://www.drupal.org/project/migration_tools/issues/3095810