Update eth js libraries

[mrsmkl]

web3.js version should be updated, but there are problems

• web3.js 1.0 is incompatible with ganache
• truffle-contract could solve the above, it it is now incompatible with web3.js 1.0
• web3.js 0.x is outdated and there is no point in switching to that

Possible solutions:

• use parity or geth instead of ganache, then web3.js 1.0 should work
• use ethers.js, perhaps it is compatible with everything