Users can pre-prepare shares for themselves by flash-borrowing shares

[ethereumdegen]

the other issue is that people can 'prepare shares' for themselves without actually owning any shares by borrowing shares from someone else in a 'flash loan' kind of scheme .

so the optimal way to operate is to always pre-prepare shares for yourself with this method -.-

POTENTIAL FIX: wipe out a users prepared shares if they transfer shares out of their account ?

[ethereumdegen]

look at erc4626

[ethereumdegen]

see branch fix/issue-60 #63