v0.1.0

• Added Documentrix::Documents#rename_collection to rename a collection and
  delegate key moving to the cache.
• Extended Documentrix::Documents::Cache::Common#pre and #unpre to accept
  an optional prefix argument.
• Implemented Documentrix::Documents::Cache::MemoryCache#move_prefix,
  RedisCache#move_prefix, and SQLiteCache#move_prefix for atomic key
  mass‑move operations.
• Updated unit tests to cover the new rename and prefix‑moving functionality.
• Switched to GemHadar::SimpleCov for test coverage.
• Removed the redis_backed_memory_cache implementation and its spec.
• Added a .utilsrc configuration file defining blocks for search,
  discover, strip_spaces, probe, ssh_tunnel, classify, and
  code_indexer.
• Reordered Docker apk add commands and added friendly echo messages during
  image build and test phases.
• Added fail_fast: true flag to the Docker file definition.
• Added interface spec for cache implementations (memory, Redis, SQLite).
• Included Set requirement for older Ruby versions.
• Removed unused expiry functionality from RedisCache.
• Refactored cache system to use explicit inheritance, moving common methods
  into Documentrix::Documents::Cache::Common and renaming clear to
  clear_all_with_prefix.
• Updated documentation with detailed RDoc comments.
• Updated CI configuration to use bundle exec and cleaned up Gemfile.lock.
• Added changelog configuration in Rakefile to support CHANGES.md.