More of a lacinia question, but any idea why enums and other names are restricted by this regex? https://github.com/walmartlabs/lacinia/blob/v0.30.0/src/com/walmartlabs/lacinia/schema.clj#L48

e.g. we cannot have [:FOO:BAR :BAZ:QUXX] as valid enums

searching the web and graphql docs for “GraphQL identifier” is not yielding anything helpful