MiSTer updates and changelog

[srg320]

Saturn:
Lots of fixes.

[aberu]

Arcade: MrJong, Jailbreak, Exerion, Bosconian

- Updated Framework

[aberu]

Arcade: Berzerk, Galaga

- Updated Framework

[aberu]

Slug Cross

- Updated Framework

[aberu]

Orao

- Updated Framework

[paulbnl]

Bomb Jack:

-Fix sprite glitches at top of screen
-Tweak blanking
-Add CRT HV adjust
-Add 60Hz video option
-Updated framework

[ModalModule]

GenMidi

- New Core - Use a Midi controller or GamePad to play music with the Genesis sound chips!

[eriks5]

C128:

• Correct Z80 I/O timing (based on analysis done by Jussi Ala-Könni)

• VDC video initialization bug fixed

• Minor compatibility issues with MMU fixed

• Updated framework

[wickerwaka]

New arcade core: IREM M90.

After a week of testing with discord folks, I have added the Irem M90 this morning. The most well known games on these boards is Bomber Man and Bomber Man World, both of which are currently supported by the core. The board and it's variants (M97, M99) got several other games which are not supported yet but will be added soon.

[wickerwaka]

MiSTer Laggy

- Updated sys to support new IO boards
- Added option to test left or right side of the screen
- Added some markers at the edge of the screen so auto-resizing displays don't get triggered
- Added a misterkun

[alanswx]

PC88
Fixes by yosinda and wwark:

• add "ddmode" for the double track
• Improve FDC (read and write)
• Added a menu to set where to connect Sound Board 2
• Complete OPNA (by using JT modules)
• Assign "HELP" key to F11 key
• Add mouse support
• Improve Graphics