v0.3.0

v0.3.0 - 2025-09-04

Added

• Introduced new code-repetition capability, that allows to produce multiple variations of user-supplied Rust code
  using for ... in ... syntax.
• Introduced a type system, overloaded functions, new type casting functions - this would allow users to use much wider
  range of values, up to entirely arbitrary sequences of tokens. Previously values were limited only to idents.
• Introduced an alternative attribute-style invocation form #[compose_items(...)].
• Introduced new compose! macro as the preferred entry point (functionally identical to the previous
  compose_idents!).
• MSRV has been set to 1.80.0.
• Added syntax reference to the documentation.
• Added migration guides for deprecated features.
• Made it possible to escape percent signs when formatting strings by using %% syntax.
• Added normalize2(...), an evaluated variant of normalize(...) that accepts ident, str, int, path, type,
  expr, or tokens and returns a normalized ident (unlike normalize(...), which consumes raw tokens).

Changed

• Error messages made to be more precise and informative.
• Made string formatting syntax more human-readable by enabling % alias %-style placeholders (with whitespace).
• Reworked introductory examples in the documentation.
• Significantly expanded project's test suite.
• Harden the testing of support for both MSRV and stable Rust versions and of usage of the library as a dependency.

Deprecated

• compose_idents! macro has been deprecated in favor of functionally identical compose!.

Removed

• ⚠️ BREAKING: Dropped the deprecated bracket-based alias-definition syntax support.

• ⚠️ BREAKING: Removed interchangeable use of literal strings and ident arguments in functions that accept both.

  Type system and overloaded functions should take care of most use-cases and if necessary - use casting functions:
  to_ident(), to_str(), etc.