TODO

# switch to windows
	- write tests for mml2mdx
		- finish mml2mdx
		- error exit status for mml2mdx
			- rewrite mdx driver code (split into interpreter + driver)
				- mdx_interpreter
					- mdx_midi_driver
						- mdx_midi_file_renderer
					- mdx_chip_driver
						- mdx_pcm_driver
							- mdx_pcm_renderer
							- mdx_vgm_renderer
				- write mdx2vgm with mdx driver
				- rewrite mdx2midi with mdx driver
				- rewrite mdxstat
			- rewrite the adpcm driver code
				- rewrite pdx2sf2
		- error handling for every MML command (like wrong tempo value)
		- error handling for voice definitions

	- make mididump more readable (echo time offset)

	- write sjis2utf8
	- write utf82sjis