HalfNES 058

Release 058 (6/14/2015)

• Added support for FDS audio chip (for NSFs only)
• Improved loading of NSFs with nonstandard headers (should not crash on POCorGTFO example)
• Made Konami VRC and Sunsoft 5B and FME7 mappers cycle accurate
• MMC5 mapper is a little better
• Fixed games that set negative scroll values (Galaxian, TMNT 1)