Main

- Support for HDMI pixel repetition (used in 2560x1440 mode) and some video tweaks (Martin Donlon).

- input: enable vibration test by holding L button (then press X/Y in Menu core).

- input: Added Gun4IR lightgun support (JB).

- Cheat menu tweaks (arit).

- menu: system menu defaults to exit (to prevent unintentional switch to USB).

- video: send freesync/VRR enable frames if the display supports it (zakk).

- added experimental VRR logic (cores require update).

- menu: update minimig joystick mode option.

- menu: fix name scroll overlap with help scroll.

- video: support for fractional frame rate in short version of video_mode.

- menu: alternating info between battery and resolution if battery available.

- SNES: adjust MSU1 data buffer for bigger video buffer (fixes 512px video modes with HQ2x enabled).