Hightlight

• Auto mouse layer support
• Show pressing keys (max 6 keys, shown at top right corner)
• Brush up contents in OLED
• Remove most of RGBLIGHT effects from via firmwares for size

What's Changed

• keyball44記載の注意書きを39/61にも追記 by @gs1068 in https://github.com/Yowkees/keyball/pull/365
• fix: typo in buildguide_jp.md for Keyball44 by @momocus in https://github.com/Yowkees/keyball/pull/371
• merge and refine: print pressing keys by @koron in https://github.com/Yowkees/keyball/pull/506
• Print (up to 3) pressing keys on OLED by @ryo33 in https://github.com/Yowkees/keyball/pull/439
• Asymmetric scroll amount depending on direction by @koron in https://github.com/Yowkees/keyball/pull/507
• Fix asymmetric behavior of scroll direction by @MiSawa in https://github.com/Yowkees/keyball/pull/443