2.6.1

Updates:

• #1950: Added onboarding guide to launcher main interface & control layout editor (by @MovTery)
• #1956: Refactored existing easter egg effect layer, added easter egg effects for multiple holidays (by @MovTery)
• #1957: Added compatibility with lwjgl3ify & use MioLauncherWrapper (by @MovTery)
• #1963: Card grid supports free placement, allowing vertical gaps between cards (by @MovTery)

Refactors:

• #1972: Optimized main interface card repositioning logic, card drag displacement changed to chain-style door-opening semantics (by @MovTery)
• #1974: Refactored tablet main interface layout (by @MovTery)

Changes:

• #1973: Adjusted launcher update dialog style (by @MovTery)

Fixes:

• #1964: SDL message box message mistakenly set as title causing incomplete error info display (by @MovTery)
• #1971: Fixed Cleanroom input method input being misidentified as key presses (by @MovTery)