v1.3.1

Fixed

• Credo plugin mode — ExDNA.Credo now works as both a Credo plugin (plugins: [{ExDNA.Credo, []}]) and a standalone check. When used as a plugin, it automatically registers itself and disables the built-in DuplicatedCode. (#4)
• Credo module not found — Changed credo dependency from only: [:dev, :test] to optional: true, ensuring proper compilation order in consumer projects. Previously ExDNA.Credo could fail to compile when credo was compiled after ex_dna. (#4)
• False positives on use/import blocks — excluded_macros now applies to sibling window fingerprinting. Previously, adjacent use/import statements were combined into synthetic fragments and flagged as duplicates even when those macros were excluded. (#5)