Change log for bsng v4

Hi! As promised I put together a list of the most important features and fixes that made it into v4: [x] Better hitboxes for monsters. [x] Correct source position for destruction particles [x] UI slot for righ hand tool. [x] Swans are back. [x] Enigmas are back. [x] Added houses. [x] Added castles. [x] State models locking. Only used by doors for now. [x] Container state models. [x] Added ui for container state models. Lower part of inventory when openening (clicking) on state model. [x] Added drag an drop between different types of ui slots. [x] Added guard monster type. [x] No more falling through ground. [x] Lots of optimizations. [x] Added logic to make blocks indestructible. Used by buildings. [x] Helmet recipe. [x] Helmets now have efficiency thst is used in hit point calculations. In other words: they work. :) [x] Added cooldown effect to all weapons. Visualized by frame intensity of weapon slot. No more spam clicking. [x] Bigger weapons take more damage but have longer cooldown. [x] Added document state model. [x] Added note document type. Clicking on a note opens the document for reading. [x] Added world map document type. Taking the map claims the land and all buildings in the area becomes destructible. [x] Player will be pushed away by big detonations like golem hits. [x] smoother character animations. [x] Swans and foxes will try to flee when player get close. [x] New block models for most tree types. [x] Potions works now (health and food). [x] All tool properties and material hardness better balanced. Much harder to dig by hand now. [x] Starfish is back. [x] You can now eat most of the bugs. They don't restore much hunger but is better than nothing. [x] Mushrooms are back. Generated in shadow. Mostly under trees. [x] Small rocks are now scattered in some areas. Usefull when building your first tool. [x] Added textures to skin, fur and clothes. best regards Jens