Add support for converting bcp47 script subtags into whatlang::Script #148
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BCP 47 contains the RFC for standardized language tags and defines the language subtag registry at IANA.
This PR adds support for converting those subtags into
whatlang::Scriptand back again.I've added another case to
ParseErroras it is already a mixed bag kind of error enum and doing so will probably make it easier to enable deeper integration with the rest of the crates features (i.e. serde orFromStr).Note: For consistency I've implemented the
DisplayforParseErroragainst clippy recommendations.