osu mapping: minor editor update may 2018

talking about the latest editor update for longer than anyone should, along with potential editor upkeep big thanks to this guy: the changelog: stream clip: maps referenced: sakuzyo Neurotoxin by deetz: YURiKA Kyoumen no Nami by deetz: CHiCO with HoneyWorks Wolf by Kantokun: Dollscythe Flashes (Extended) by Sk