Generator v0.50

Features

• Complete GTK4/libadwaita UI - modern GNOME desktop integration
• Meson build system - replaces legacy autotools
• SDL3 audio/input backend - improved platform support
• xBRZ upscaler - high-quality 2x-4x pixel art scaling
• Scale2x/3x/4x algorithms - fast EPX-based upscaling
• Netplay/Kaillera support - online multiplayer
• 6-button controller - full Genesis controller support

Sound

• Two-pole Butterworth low-pass filter (~14 kHz cutoff)
• DC blocking high-pass filter (~15 Hz cutoff)
• Improved FM/PSG mixing ratio (7:3)
• DAC ladder effect - authentic YM2612 sound
• Internal oversampling support

Fixes

• Audio slowdown on Wayland focus loss
• 64K RAM boundary corruption bug
• Buffer overflow in Z80 disassembler
• Unsafe string handling in config parser
• Memory allocation error handling

Other

• C23 standard compliance
• SPDX license identifiers in all source files
• Migrated to AdwPreferencesDialog (libadwaita 1.4+)
• Removed legacy backends (SVGALib, Allegro, Tcl/Tk, SDL1)

See CHANGELOG.md for full history.