alpha code
simplefy battle

use quadtree as aoi
list msg deprecated
refine battlemsg broadcast
implement chat/openchest/spawning mobs

add: random mob spawn
add: chat(sanitizer not implemented yet)
add: open chest, loot(firefox not implemented)
improve: teleport
remove TODO
Merge remote-tracking branch 'origin/master'

Conflicts:
	.gitignore