`gen` is a reserved keyword in Rust 2024 edition

[Nutomic]

https://blog.rust-lang.org/2025/02/20/Rust-1.85.0.html

https://doc.rust-lang.org/edition-guide/rust-2024/gen-keyword.html

This means to use this crate with 2024 edition, users have to import with use captcha::r#gen as generate;. It would be nice to rename the method to make it easier.

[daniel-e]

Many thanks for opening the issue. I fixed it in version 1.0.0.