Hi, I just installed your keyb and learning it. Trying to get zccustomed to Y and Z switch. But I think placing ź under the z letter and ż under z with swipe is wrong. As you can read here: https://pl.wikipedia.org/wiki/Alfabet_polski#Cz.C4.99sto.C5.9B.C4.87_wyst.C4.99powania_liter
ż is ten times more frequent than ź. So that it should be first.
Another way would be to have ź under x, as it is for Polish Programmers keyboard layout.