v1.9.0

Features

• Enhanced Hackmac::Graph with better terminal graphics using Unicode block
  characters (▀) for 2px vertical resolution.
• Added comprehensive module documentation for Hackmac module including
  project purpose, target users, and core functionality.

Refactorings

• Extracted Hackmac::Graph::Formatters module into its own file
  (lib/hackmac/graph/formatters.rb).
• Moved Hackmac::Graph::Display::Cell class to a dedicated file
  (lib/hackmac/graph/display/cell.rb).
• Refactored Hackmac::Graph rendering logic:
  • Introduced draw_graph private method to encapsulate graph drawing
    logic.
  • Added data_range helper method for calculating data range.
  • Simplified start_loop by removing redundant code and leveraging new
    helper methods.
  • Removed duplicate pick_color method.

Documentation

• Added detailed documentation for all public methods in Hackmac::Graph and
  related modules.
• Included usage examples for Hackmac::Graph::Formatters.
• Added YARD doc for Hackmac::Config::DEFAULT constant.
• Added YARD doc for Hackmac::GithubSource::GITHUB_API_URL constant.
• Added YARD doc for Hackmac::Graph::Display::ANSI constant.