* Changed `expand_message_xmd` input to `Iterator` * Changed `hash_to_scalar` input to `Iterator` * Fix rustfmt * Add documentation for private helper types * Fix documentation * Improve `chain!()` syntax bias * Move helper functions to `mod util`
* Changed `expand_message_xmd` input to `Iterator` * Changed `hash_to_scalar` input to `Iterator` * Fix rustfmt * Add documentation for private helper types * Fix documentation * Improve `chain!()` syntax bias * Move helper functions to `mod util`