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title: Marten 0.2.1 release notes
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_February 25, 2023._

## Bug fixes

* Fix possible empty field names in messages associated with exceptions raised when targetting non-existing fields with query sets
* Fix broken methods inherited from the [`Enumerable`](https://crystal-lang.org/api/1.6.2/Enumerable.html) mixin for request parameter abstractions
* Fix a possible typing issue related to the use of `Marten::Emailing::Backend::Development#delivered_emails` in specs generated for projects with authentication
