Squashed 'kowm-core/' changes from 4d6d749..6c58f08


git-subtree-dir: kowm-core
git-subtree-split: 6c58f089e3ce6f1db37c1e51544ad2484c699fcc
Merge commit '550b3a0e8174ed3269ca60102d112959c60d4080'