Ran `npm update`. This resolves a ganache crash.
We can't really use `npm ci` because it's intentionally incompatible
with our incremental development workflow. We'll want to use it for
production builds, though.
ghstack-source-id: c66c5d4647
Pull Request resolved: https://github.com/certusone/wormhole/pull/89
Improved devnet setup to generate deterministic node and guardian keys.
Devnet setup routine that configures a dynamic guardian set on Ethereum.
Configurable number of nodes in Tiltfile.
Leo