* Reduced hardness value for dirt and stone walls (first biomes of layer 1). So mining should be much easier in the beginning.
* Scaled down all knockback by a factor of 0.5
* Added "sentience timeout" to Angy and Happy Rolley Bouldeys, which means they will not continuously roll around for all eternity, but eventually will stop.
* Changed rolley bouldy's behavior when they hit something they cannot break, so they don't get stuck.
* Fixed issue where gold loot chests consumed gold key, but did not drop loot.
* Fixed ice spikes (of ice golem) not being mineable.
* Fixed rolley bouldeys becoming invisible and non-colliding with walls if they are activated, and then the chunk they are in is unloaded, and reloaded again.