Prefer OptionParser to Trollop. One less dependency
Remove OS gem. Use our own operating system detection
Simplify `Utilities.get_modified_time`
refactor console output methods to add clarity
do not use extra separators at end
update README to use new format and not use the image

[ci skip]
Remove escape charactor in README

[ci skip]
fix tests for console refactoring
always prepare summary before specs
Fix specs for String#clean_for_authors
Prefer unless to if nil