Celebrating 15 Years of Elixir with Enhanced Type Inference in v1.20

The article marks 15 years since Elixir's first commit and introduces the first release candidate for Elixir v1.20, which implements type inference for all language constructs. Elixir's type system aims to be sound, gradual, and developer-friendly, distinguishing itself with the dynamic() type, which allows runtime checks for type violations. The article outlines the evolution of Elixir's type system, highlighting past releases that introduced set-theoretic types and improved type inference. It discusses upcoming milestones, including the need for feedback during the type system's development. Significant improvements are expected over the next 15 months, leading towards a more robust type system and enhancements in performance and ergonomics. The author invites the community to participate in discussions and share feedback in dedicated threads.