CPCEC a new emulator from cngsoft

[cngsoft]

Loads of work and worry, little (if any) spare time... Here's a new patch but don't expect anything really big:
20250321 -- minor patch fixing the sRGB calculations (Gigascreen would "darken" images in motion because it assumed Gamma 2.0 instead of 2.2), several colour palettes (CPCEC: OLD+PLUS; ZXSEC: ULA+ULAPLUS; MSXEC: V9938) and a bug in the scarcely used GZIP writer. MSXEC now supports 8-MB cartridges and new cartridge headers ("ROM_ASC8", "ROM_AS16", "ROM_KON4", "ROM_KON5", "ROM_NEO8", "ROM_NE16", "ASCII16X") and patches a bug in the V9958 YAE video render.