Removing Node 8 for now in Travis CI; it is not working.
Removing Node 8 for now in Travis CI; it is not working.

ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js,ethers-io/ethers.js