Fixed AIObjectiveGoto terminating if previous path was unreachable, BackGroundSpriteManager won't place a sprite if a suitable position isn't found, StatusEffect fire position fix, UI improvements, door convexhull fix, progress on Fabricators & Deconstructors, mapentities sorted by category in edit mode, item descriptions, TutorialMode refactoring to make it easier to add new types of tutorials

Subsurface/Content/Items/OxygenGenerator/oxygengenerator.xml

@@ -1,6 +1,7 @@
 <Items>
   <Item
     name="Oxygen Generator"
+    category="Machine"
     linkable="true">
 
 
@@ -25,6 +26,7 @@
 
   <Item
     name="Vent"
+    category="Machine"
     linkable="true">
 
     <Sprite texture ="vent.png" depth="0.91"/>