Emulation Parity

Starting with this release, emulation quality should be as good or better as the old core in all situations. The following changes are included:

• RESBL during hblank now behaves correctly -> fixes Keystone Kapers
• Several consecutive write cycles to WSYNC now behave similar to the old core (which is still not fully correct)
• Tweaked effective description of width modulation effects in startfield effect -> fixes Spike's Peak
• Fix RESMPx for 32 pixel players -> fixes Snoopy and the red baron
• Adjustments to RESMx and NUSIZx during draw counter decode to better match real hardware
• While autodetection of frame start should now work in all cases, ystart (together with frame height) are now supported and can be used to override autodetect
• Reliability of TV mode autodetect is improved, manually overriding the detected mode is now supported
• Timing for large frames, invalid or missing sync is improved. Among other things, thigs fixes PCM (speech) in Quadrun and the hectobyte demo
• YStart values in the ROM database have been removed or adjusted to match the new core
• RSYNC is now implemented and matches real hardware more closely than the old core