osu! Improvement Indicator Plus 제작자: Yata

This extension displays an Improvement Indicator (II) and a Skill Indicator (SI) on osu! player profiles, showing how quickly a player is improving compared to the average, and how much PP they have gained compared to the average/their playtime. This extension is an alternative to the existing II extension by Ferry (https://github.com/ferryhmm/oii).