Changelog

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1.49
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Shell:

Additions:
- Added more palettes to extras
- Game-specific custom palettes
- Scale factors up to 8x
- Added option to enable overclocking
- Added rewind controls to gamepad
- Famicom Mic support
- Optional JACK Audio support (McKayJT)
- Added .wav sample loading


Changes:
- Separated GTK+ and SDL input settings
- Removed deprecated functions from UI
- Use GTK+ OpenGL widget for GUI (Wayland support)
- Reworked Alternate Speed/Fast-Forward
- Allow mapping more than 9 joysticks (Lou-Cipher)
- Restructured build system, separated SDL and GTK builds
- Cursor options split int normal and special cursor options

Fixes:
- Fixed automatic ROM patching, improved patching function (hugoarpin)

libretro:

Additions:
- Add support for multiline cheats and raw cheats (iLag)
- Add adapter autoselect using NstDatabase.xml (hunterk)
- Famicom Mic support
- Cheevos ram access support (meepingsnesroms)
- Add .wav sample loading

Fixes:
- Fixed heap corruption bug with crosshair (Arto Vainiolehto)
- Fixed black screen when non-existent custom palette is selected
- Fixed crosshair and overscan with blargg filter

Core:

Additions:
- Added support for overclocking (meepingsnesroms)

Fixes:
- Fixed NSF and FDS in Dendy mode (Eugene.S)
- Fixed coding mistake in PPU (zeromus)
- Modified submappers for VRC2/VRC4 games (GeneralFailer)
- Fixed compilation error in SetRamPowerState (Arto Vainiolehto)
- Fix for McAcc games (joepogo)
source: http://0ldsk00l.ca/nestopia/