Stargate Upgrade- Second time is a charm!

Proposal to complete the Stargate upgrade, halt cosmoshub-3 at 06:00 UTC on Feb 18th, export the state and start cosmoshub-4 based on gaia 4.0.

Gaia Commit hash: a279d091c6f66f8a91c87943139ebaecdd84f689 Proposal details can be found on github: https://github.com/cosmos/governance/pull/13 Rendered: https://ipfs.io/ipfs/QmTkzDwWqPbnAh5YiV5VwcTLnGdwSNsNTn2aDxdXBFca7D/example#/ipfs/QmYn2SxCMYk5SWs5GMcXdbXR8wMCCXRmCyW19SFyzSeZp1 ipfs: https://cloudflare-ipfs.com/ipfs/QmYn2SxCMYk5SWs5GMcXdbXR8wMCCXRmCyW19SFyzSeZp1 sia: https://siasky.net/EACAsPcUjpTEpQlG9_nRI1OR07gNeRiudfEWAvKnf0tj_Q