Plugin name: BKCommonLib
Plugin link: https://www.spigotmc.org/resources/bkcommonlib.39590/
Description: This utility library shares all the common code needs for various plugins, and having them in one library heavily reduces the amount of duplicated code. The featured utilities are varied, and whenever something is missing in Spigot, it is added in BKCommonLib. This is one of the reasons why it has become this large: there are simply a lot of things Spigot doesn't (want to) offer.
Multiple threads have said it's been updated, but it doesn't look like...
https://aternos.org/addons/a/spigot/39590
Thanks!