Increase inventory from 126 max slots to 135 max slots

[Anxiety 10]

Suggestion is simple, add a shop item that locks up the last row of the inventory making the max amount of slots 135 instead of 126. Will benefit both the players as well as the project.

[Observer 19]

Hey, we already tried to add this last extend fro inventory, but we get some problems with this. Maybe in future we will add this