`reitit.coercion/request-coercer` converts records created by a multipart data store into maps

[Eugene Pakhomov]

The Reitit multipart middleware uses the coercer in such a way so that it keywordizes all the keys in the data, even if that data is a record.

I'm using a store that returns a record instead of a plain map because it makes certain aspects simpler, including validation (a plain instance? instead of a custom spec). The current implementation of the multipart middleware along with the request-coercer function forces me to go back to a plain map with a custom spec.