OK 1. convert file with a single track
OK 2. search cue in specified dir if cutter's argument is dir
OK 3. write tags to the splitted files
OK 4. specify output file format including path
OK 5. add support of config file with default options
OK 6. copy file instead of convert if possible
OK 7. substitute odd symbols in track names
OK 8. add charset coding argument
OK 9. prepare setup
10. create default config on startup