* (cue/toc) Line numbers in error messages are off sometimes.
* (cue/toc) Double quotes must be escaped in a string, otherwise
  they will not be escaped when printed.
* (toc) Binary CD-TEXT data is parsed, but not saved.
* (toc) Only a single data file is supported.
* (cue) track_mode does not match cdrtools and CDRWIN docs.
* (cue) Add support for CDTEXTFILE format.