* Add option to console version to skip if file already exists
* Fix colour output for console version
* Allow console version to override default colours with the `-s colour,colourspec` option.
* Prefer StreamBufferSource over any other filter installed (e.g LAVFilters), as only SBS exposes the teletext stream.
* Minor fix to language conversion table
* Output is now formatted as UTF-8, with no Byte Order Mark (BOM).
* Experimental support for other languages