Add #[strum(transparent)] attribute
#331
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Adds the
transparentattribute, usable withAsRefStr,DisplayandIntoStaticStr. This delegates the derived trait impl to the underlying (single) field of the enum variant.Implementing this for
EnumStringwould be nice, but it doesn't really act the same way as for the other traits. ForEnumString, something like#[strum(other)](similar to#[serde(other)]) would make more sense, because there you would have a last single attempt to parse the input into acatch allvariant, whereastrasparentcan be added to multiple variants.Therefore, if desired, that should be handled in a separate PR.
Closes #258