v3.1.6 b506

@stumper66 renamed nametag-auto-update-task-period to async-task-update-period

@stumper66 added new setting async-task-max-blocks-from-player

@stumper66 made the async task now level unlevelled entities

@stumper66 added new command /lm rules force_all

@stumper66 added a check to prevent possible reanimation of a dead mob if it dies as the exact moment it gets relevels when using player levelling strategy

@stumper66 added a player levelling metric to bStats

@stumper66 fixed conditions --> custom-names rule not working properly

@stumper66 fixed settings being ignored if they more than 1 level deep. Includes kill-skip-conditions and perhaps others

@lokka30 significantly expanded the list of forced-unlevellable entity types. (forced-unlevellable mobs include armor stands, players, and so on.)

@lokka30 made it so even with the override argument, it is now impossible to summon levelled mobs if the specified entity type is forced-unlevellable.