tree e0c36b0979d9d7904f6ae8ba3b26f025fa2109f4 parent 6c6b63e69d3aca711f727e37a2f0f0cd43b5647f author johni0702 1415965405 +0100 committer Tad Hardesty 1419222015 -0600 Keep track of entity IDs across worlds (fixes #486 and #447). Keeping an entity ID registry globally rather than for each world allows entities to retain their IDs when they teleport between worlds. Entities now do not change their ID between being created and being removed.