Changes since 4.6

• Added xpadneo - linux driver for xbox one wireless gamepad.
• retroarch - updated to v1.8.8.
• Added mame - standalone MAME emulator building from latest code.
• srb2 (Sonic Robo Blast 2) - updated to v2.2.2.
• cgenius - updated to 2.4.4.1.
• hatari (Atari ST emulator) - updated to v2.2.1.
• amiberry (Amiga emulator) - updated to v3.3.
• scummvm - updated to 2.2.0
• xroar (Dragon 32 / CoCo emulator) - updated to v0.36
• ti99sim - update to version 0.16.0 and switch to SDL2.
• Added ti99sim-sdl1 for older distros as new code requires GCC 8
• sdltrs - switch to the SDL2 version, enable for KMS
• attractmode - now supports RPI4/KMS.
• lr-vecx - now includes GPU rendering support for smooth vector output.
• sdl1 / runcommand - fix aspect ratio using the dispmanx backend with sdl1 on fkms (this affects various sdl1 emulators such as dosbox, * daphne, openbor and others).
• lr-gpsp - fixed crash on RaspberryPi OS Buster.
• opentyrian - updated to latest code which now uses SDL2 backend.
• darkplaces-quake - added optional gles version for RPI4 with better performance.
• gemrb - updated to v0.8.6 and switched to SDL2 backend.
• lr-bnses - updated to the current BSNES version of the libretro fork.
• vice - updated to latest version, and re-enable fastsid which got disabled by default upstream.
• Improved Aarch64 support (64bit Arm) - can be manually installed on the beta 64bit Raspberry Pi OS, but is not officially supported.
• lzdoom - update to 3.86a (This was announced as the final lzdoom release to support GL2 rendering.)
• mupen64plus - reworking of module logic - now enabled on mali targets.
• Added recognition for Jetson Nano and Tegra X1
• Added gpg signing for pre-built binaries.
• Improvements to runcommand and RPI4 videomode detection.
• Updates to Skyscraper (Metadata scraper).
• usbromservice - fixed bug with mounting ext3/ext4 partitions.
• audiosettings - updates for Pi4 and support for discrete internal ALSA devices.
• New esthemes added.
• Various other bug fixes and improvements.
• Added new experimental modules:
  • lr-mesen - Mesen NES/Famicom emulator.
  • lr-theodore - Thomson MO/TO system emulator.
  • lr-smsplus-gx - Sega Master System/Game Gear emulator.
  • lr-gearsystem - Sega Master System/Game Gear/SG-1000 emulator.