I've upgraded the version of RetroArch that Vizzed uses from 1.10.1 to 1.10.3 for most of the systems.

This update added a few new emulators that I plan to eventually utilize:
gw: Handheld Electronic
-A core for Game & Watch
jumpnbump: 4 player "brawler" game
-https://github.com/libretro/libretro-super/issues/972
neocd: Neo Geo CD

The last few updates also added some emulators that I plan to utilize at some point, which include:
quasi88
retro8: PICO-8
vaporspec: A virtual game platform with capabilities similar to 80s game consoles
vice_x64: Commodore 64
vice_x64sc: Commodore 64 (better accuracy)
vice_x128: Commodore 128
vice_xcbm2: Commodore CBM-II
vice_xcbm5x0: Commodore CBM-II 5x0
vice_xpet: Commodore PET
vice_xplus4: Commodore PLUS/4
vice_xscpu64: Commodore 64 (with SuperCPU cart)
vice_xvic: Commodore VIC-20
-bk
-chailove (2D game development framework)
-craft (minecraft clone)
-freechaf (Fairchild emulator)
-gearcoleco (ColecoVision emulator)
-jaxe (CHIP-8 emulator)
-minivmac (Mini Macintosh emulator)
-vitaquake2-rogue
-vitaquake2-xatrix
-vitaquake2-zaero
-wasm4 (another game development framework)

Here's a list of every system that got upgraded to 1.10.3:
-Arcade
-Atari Lynx
-Commodore 64
-Game Boy
-Game Boy Advance
-Game Boy Color
-Game Gear
-Neo Geo Pocket
-Neo Geo Pocket Color
-Nintendo NES
-Sega Genesis
-Sega Master System
-Super Nintendo
-WonderSwan
-WonderSwan Color
-Virtual Boy

Systems that got upgraded from 1.9.10 to 1.10.3:
-TurboGrafx

Systems still using 1.9.0:
-Atari 2600
-Atari 7800

Systems still using 1.7.7:
-Nintendo 64


If you experience any issues that are probably caused by the new version, let me know.

Here's a list of things added to version 1.10.2 and 1.10.3
https://github.com/libretro/RetroArch/blob/master/CHANGES.md#1102
https://github.com/libretro/RetroArch/blob/master/CHANGES.md#1103
(not all features are supported by emscripten)