v0.88-1.16

Fix packet size limit. Fix crash by setting the destination to out of range position. Fix client lose entity. Fix other mods' custom packet handling delay. Fix player-only portal issue. Fix portal generation consumes item in creative mode. Collision tweaks. Fix minecart teleportation. Extending the datapack custom portal system: Added a new form imm_ptl:one_way and new field commands_on_generated which allows invoking different commands for different portals. Add /portal debug accelerate <num> command for collision testing. Add a portal attribute to disable player rendering. Add command /portal create_connected_rooms