* expand pathfinder bounds and time limit to allow for longer paths to
be found, even on slower computers.  This WILL have
    negative impact on slower computers that are operating near their
performance limit (the additional pathfinding time will likely
    push it past acceptible tick times).  Will be opening these up to
config options so that server admins can adjust to
    suit their hardware.
* add shift-click interaction to backpack
* add death-cause entity-name to dead-npc tracking list
* fix default targets that will aggro on NPCs (essentially, use the
config-target list as the list of mobs that will aggro said npc)