Some notable updates to both the Listener and the plugin at large:
  - Removed Factions support. Factions + MCore were iffy at best and
including them in the base directory as libraries proved to be
extrenuous and overall, unhelpful, especially with breaking updates. If
users wish to have support with power loss, there are two viable
options: exempt the world from power loss via factions configuration or
claim the land of the arena as a "KotH" faction with custom flags
  - Added spawn-camp support. If enabled in the settings, you can
disable spawn-camping in an arena. By default, players that are 4.75
blocks away or less (inclusive) from their spawn are exempt from enemy
player damage. As of yet this does not include abilities.
  - Optimized Listener class slightly.