-Fix crash when joining the end, closes #1
-Create a new ListTag if tag is null
-Count siege kills when outside the spawning zone
-Spawn stable sigil on the ground if there is no space in the player's inventory
-Make stable sigil immune to fire damage
-Add vex to default spawn list for end siege
-Add additional info for cursed earth entry in guidebook
-Fix crash when joining the end, closes #1
-Create a new ListTag if tag is null
-Count siege kills when outside the spawning zone
-Spawn stable sigil on the ground if there is no space in the player's inventory
-Make stable sigil immune to fire damage
-Add vex to default spawn list for end siege
-Add additional info for cursed earth entry in guidebook