YAML::Tidy

• Inspired by perltidy and yamllint
• I think I said at the GPW 2020 that I want to write yamltidy
• I did in fact, but it only has two features so far
• It removes trailing whitespace
• It indents all input to the same amount of spaces (configurable)
• It doesn't remove any other formatting or comments
• It uses libyaml for getting the parser events line and column numbers
• Can be configured by a YAML file (of course)