[0.6.0] - 2019-05-31

Added

• SugarUtils::File.append, which is explicitly for appending to a file. It will
  also create a new file if it does not yet exist
• SugarUtils::scrub_encoding, which is used for cleaning badly encoded
  characters out of a string
• SugarUtils::File.change_access, a wrapper for changing ownership and
  permissions of a file
• SugarUtils::File.atomic_write, to atomically write a file

Removed

• append support in SugarUtils::File.write (could have been specified by { mode: 'a })

Changed

• :mode and :perm are now aliases for setting permissions on files in all the
  related methods (i.e., .write, .write_json, .touch, .append)
• convert SugarUtils::File.write_json to use .atomic_write