message: src/coins.js: isValidCoin -> isValidNetwork
  The function takes `network` as an argument after all.
  Add deprecation notice for old func.
diff: @@ -55,7 +55,11 @@ function isZcash (network) {
  return typeforce.value(networks.zcash.coin)(network.coin)
  }
  -isValidCoin = typeforce.oneOf(
  +/**
  + * @param network
  + * @returns {boolean} returns true iff network is any of the network stated in the argument
  + */
  +const isValidNetwork = typeforce.oneOf(
  isBitcoin,
  isBitcoinCash,
  isBitcoinSV,
  @@ -85,5 +89,10 @@ module.exports = {
  isDash,
  isLitecoin,
  isZcash,
  - isValidCoin
  +
  + isValidNetwork,
  + /**
  + * @deprecated: use isValidNetwork
  + */
  + isValidCoin: isValidNetwork
  }
  