Localize quaternions

init.lua

@@ -1,6 +1,5 @@
 assert(modlib.version >= 89, "character_anim requires at least version rolling-89 of modlib to function correctly")
 local mod = modlib.mod
 local namespace = mod.create_namespace()
-namespace.quaternion = modlib.quaternion
 namespace.conf = mod.configuration()
 mod.extend"main"

main.lua

@@ -1,3 +1,4 @@
+local quaternion = modlib.quaternion
 -- TODO deduplicate code: move to modlib (see ghosts mod)
 local media_paths = modlib.minetest.media.paths
 local models = setmetatable({}, {__index = function(self, filename)