[DateTimeParamConverter] Allow empty attributes to be considered when optional
feature #241 [DateTimeParamConverter] Allow empty attributes (merk)

This PR was merged into the master branch.

Discussion
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[DateTimeParamConverter] Allow empty attributes

If you have an empty attribute for a DateTime converter and it is optional, it shouldnt throw a 404 but abort the conversion.

Commits
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f7e2290 [DateTimeParamConverter] Allow empty attributes to be considered when optional
fixed typos