Rex v0.5.1

Rex v0.5.1

Rex v0.5.1 is a stability and cleanup release focused on long-term correctness.

This update improves confidence in the parser by covering postfix assignment paths more directly, removing obsolete parser branches, and adding regression coverage for nested member and index assignments.

It also refines the public documentation and package workflow notes so the current project model is clearer and more consistent.

The goal of this release is simple: keep Rex reliable as the language and toolchain continue to mature.

Full Changelog: v0.5.0...v0.5.1