The steps to upgrade to v4 require a middle upgrade that enables storage providers to post proofs to the chain without needing to be running v3 compatible providers. This upgrade will temporarily remove the ability to create new storage deals, but new endpoints will open up for v4 providers to continue posting proofs and claiming strays.
v4 compat
Part of #365.
Description
The steps to upgrade to v4 require a middle upgrade that enables storage providers to post proofs to the chain without needing to be running v3 compatible providers. This upgrade will temporarily remove the ability to create new storage deals, but new endpoints will open up for v4 providers to continue posting proofs and claiming strays.