commit a94294e189dca24673bee109d2581f78982de719
Author: Lukas K <lu@0x83.eu>
Date:   Sat Jan 14 11:58:44 2023 +0100

    imp board: support up to 8 inner layers
    
    closes #701
    
    changelog: Enhancements/Board Editor: support up to 8 inner layers
