Version 0.2.0

This is a minor version change because the supported CLI options have been drastically improved!

• Clarify messaging on under-indented lines and explain how much they should be indented.

• Support specifying multiple paths, directories, and globs on the CLI. For example:

  # Check a directory and all its subfolders. In this case, only files
  # matching *.yaml, *.yml, and *.md will be checked.
  > yaml-doctor path/to/directory
  
  # Check files matching a glob pattern
  > yaml-doctor configuration/*.config
  
  # Check a list of different files, directories, and globs.
  > yaml-doctor this/file.yaml that/file.yaml some/directory/*.yaml

  Globs not processed by your shell are processed with the glob package. Check its documentation for complex patterns you can use.

• Add --version CLI option.