Bugfix, the determineParseType function returned the wrong type if the first line in the section is a comment.

  / parseAsStruct: If a key already exists, the new value will be appended
    to the value that is already stored in the existing key.

  / The title of a section is now being trimmed, all whitespaces and tabs
    are being replaced by an underscore.

  / If a line is empty, it is now being skipped.
  / parseAsMatrix now throws a warning if the line that is currently parsed
    differs from the first line column. The line will be skipped.