Introduced a new password generation algorithm, called 'coinflip', which simply returns "Heads" or "Tails". Associated CLI flag has been added as well. Also, improved error messages during password generation. This addition provides a simpler algorithm option and clearer user feedback during errors.
Test suite `TestIntToAlgo` was added to `algo_test.go` to validate `IntToAlgo` function. Additionally, Algorithm constants in `algo.go` have been prefixed with "Algo". These changes were made in order to make the code clearer and ensure the function returns the expected values for the given inputs.
Refactored the generator to include a new config option, changed function signatures to follow the new structure, and renamed the function 'RandomString' to 'RandomStringFromCharRange' for clarity. Also, added a new mode and algorithm feature to enhance password generation. Furthermore, added several tests for new features and configurations. Adapted the CLI to use the new configuration approach. This refactoring was necessary to improve the customizability and clarity of the password generation process. Fixed minor issues and added '.gitignore' for clean commits in the future.