Js Dos Versions Save

• Fix #261
• Fix #262

• Fixed horizontal/vertical scrollbar bug #259

• Updated emscripten to 3.1.21
• Fix #250

• #113
• #231

• latest emscripten
• reduced logs
• new simple-keyboard
• new keyboard layout (with arrows and control keys)

• add volume
• add cpu control (w/o actual implementation)
• add sensitivity control
• add scale control
• fix #221

• preventUnload
• withNetworkingApi
• refactored tips
• correct rotation of loaders
• introduce backend options
• update dependencies
• log extraction progress
• ~https://github.com/caiiiycuk/js-dos/issues/136~

Support raw messages in hardware.serverMessage

Maintenance release

• #202
• Updated dependencies
• emsdk 3.1.7
• new workflows