Old marshal issues should either be migrated or closed

[erights]

See https://github.com/Agoric/agoric-sdk/labels/marshal

[mhofman]

I'll keep filing the issues on agoric-sdk for now since that's where the label for the zestival is. I'll make sure they're all labeled with marshal so they can be moved after @jessysaurusrex has accounted them all.

[Tartuffo]

@Chris-Hibbert @mhofman @jessysaurusrex This does not have an area label that is covered by our weekly tech / planning meetings. Can one of you please assign the proper label? We cover: agd, agoric-cosmos, amm, core economy, cosmic-swingset, endo, getrun, governance, installation-bundling, metering, run-protocol, staking, swingset, swingset-runner, token economy, ui, wallet, zoe, zoe contract