There is something wrong with updater-script - it did not replaced SamsungIME.apk (S5), flashed with PhilZ recovery. But that's not big problem for me - I just extracted it and pushed SamsungIME.apk manually - tested briefly, looks like it is working OK here (polish language). Great job!
I missed 240 dpi keyboard
Now much better
EDIT: Screenshot (S5, 240 dpi): http://i58.tinypic.com/16hojf7.png
Maybe letters are a little bit too high, but that's just cosmetic, nothing important
Did You thought maybe about modding phone keyboard for 240 dpi? That's the last thing that not look good in 240 dpi