v0.2.0

• Added a full Minitest test suite
• Fixed respond_to?(:slug) returning false for models using method_missing by implementing respond_to_missing?
• Fixed collision resolution generating identical suffixes by switching from id-based deterministic suffixes to SecureRandom-based random suffixes
• Fixed length parameter edge cases (zero, negative, very large values) by adding length validation and clamping via normalize_length method
• Fixed timestamp fallback to include random suffix for additional uniqueness guarantee
• Added length validation constants (MAX_HEX_STRING_LENGTH, MAX_NUMBER_LENGTH) to prevent invalid length values

PRs contained

• Add Minitest test suite by @rameerez in #1

Full Changelog: v0.1.1...v0.2.0