Action
* (Fix) When a block is placed and then harvested, the underneath base block is the base block for the biome (and not based on the harvested block type).
* (Add) You can now only place as many blocks as you have in your inventory.

Input
* (Add) Subclassing of the window functionality added so that we can capture the UP and DOWN keypress.

Movement
* (Fix) Movement now nice and smooth.