add const function to get &str from ArrayString #231
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馃憢 Hello @bluss! Thank you for making this crate; it's super useful.
I don't think we can dereference an ArrayString into a &str in a constant function right now, and traits like Deref seem unlikely to become const in the near future. Do you have an idea of the best way to support ArrayString -> string coercion in const functions?
One way would just be to add a new method on ArrayString. I've done that in this PR in case it would be helpful; otherwise, let me know if you prefer me to open an issue for this.