mikitree: use AsyncWriter to prevent LockErrors because of multithreading (only seems prevalent in sandbox?)
mikitree: use AsyncWriter to prevent LockErrors
because of multithreading (only seems prevalent in sandbox?)

ShadowKyogre/mikidown,ShadowKyogre/mikidown,kekh/mikidown,ShadowKyogre/mikidown,kekh/mikidown,kekh/mikidown