Fix first run crashing on Xbox One. Added savestate support. Rewind w…

…orks. Fixes issue libretro#83 and possibly libretro#49.  Added Disc Control menu.  Supports Disks, Tapes and M3U files.  Added in support for 5200 Super Carts.  Better support for 5200 controller.  Added Paddle support.  Converted Core Options menu to v2.  Moved some core options into submenus.  Added controller mappings for Ports 2-4.  Added options for Dual Stick and Swap Ports.  Fixes issue libretro#76.  Joystick and Console can be controlled more easily with device type Atark Keyboard.  Added 4 Hi-Res Artifacting mode options.  Restart does something now.  When core option changed only reboot if necessary.  Removed several hardcoded controller binds.  Fixed issue libretro#29.  Joypad input ignored when virtual keyboard active.  SIO Acceleration now defaults to enabled.

.vs/ProjectSettings.json

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+}

.vs/VSWorkspaceState.json

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+}