Hotfix Update 0.6.1 — Below the Stone Steam update #340415

Change Log: # Alpha 0.6.1 - Hotfix * 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.