Release 2022.05.1

[foonathan]

• Change dsl::scan: it will now be invoked with the previously produced values.
• Add dsl::parse_as to ensure that a rule always produces a value (e.g. when combined with the dsl::scan change above).
• Add lexy::lexeme_input to support multi-pass parsing.
• Turn dsl::terminator(term)(branch) into a branch rule, as opposed to being a plain rule (Turn dsl::terminator(branch) into a branch #74).
• Add dsl::ignore_trailing_sep() separator.
• Add lexy::bounded<T, Max> for bounded integer parsing (Add bounded integer parsing #72).
• Add dsl::code_unit_id rule.
• Turn lexy::forward<void> into a sink.
• Support references in lexy::parse_result and lexy::scan_result
• Fix bug that prevented lexy::parse with a root production whose value is void.
• Fix bug that caused infinite template instantiations for recursive scans.
• Fix bug that didn't skip whitespace in lexy::scanner for token productions.

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This discussion was created from the release Release 2022.05.1.