4.2.0

In my opinion, this is the most stable release we've had in a while. Many features added in this release were just side affects of fixing up some bugs.

• Let same_cdi core handle zipped bios file directly (Thanks to @pastisme)
• Fix audio sliders/mute button (Thanks to @n-at)
• Add ability to rotate video (Thanks to @allancoding)
• Added persian fa-AF language (Thanks to @iits-reza)
• Added more catches for a start-game error
• Fixed default webgl2 option
• Organized settings menu, by dividing entries into sub-menus
• Fixed the EmulatorJS exit button
• Added the ability to internally add configurable retroarch.cfg variables
• Fixed default settings being saved to localstorage
• Fixed in browser SRM saves (finally)
• Read save state from WebAssembly Memory
• Fixed an issue when loading PPSSPP assets
• Refactored the internal downloadFile function to be promised based instead of callback based
• Added checks if core requires threads or webgl2
• Added ability to switch between cores in the settings menu
• Added the ability to enable/disable threads if SharedArrayBuffer is defined
• Added a PSP controller scheme for the control settings menu
• Fixed the volume slider background height in firefox
• Added handling for lightgun devices
• Refactored the EmulatorJS build-emulatorjs.sh build script
• Added ppsspp core