Merge branch 'develop' into poc8

.gitignore

.mailmap

.travis.yml

Dockerfile

README.md

accounts/abi/abi.go

accounts/abi/abi_test.go

accounts/abi/doc.go

accounts/abi/numbers.go

accounts/abi/numbers_test.go

accounts/abi/profile.cov

accounts/abi/type.go

accounts/account_manager.go

accounts/accounts_test.go

cmd/bootnode/main.go

cmd/disasm/main.go

cmd/ethereum/cmd.go

cmd/ethereum/flags.go

cmd/ethereum/main.go

cmd/ethereum/repl/repl.go