Easily connect Elm ports to your dapp.
Includes txSentry and walletSentry
See elm-ethereum-simple-example for usage.
TxSentry
Needed to wire into a wallet and send/track transactions.
Currently only supports Metamask, which uses web3.js v0.20.3
WalletSentry
Very useful for monitoring account and networkId changes, and letting your Elm app know.
Currently polls for account changes every 500ms.