Avoid signalling readiness when app is about to be closed.

fixed #875 and added tests for eth_sendTransaction

passing key path to all invocations

Fixed eth_call nonce and gas handling

ipc rpc with nano transport (simple duplex)

Bumping clippy and fixing warnings

More descriptive expectations to transaction queue consistency.

uint bug - replace add with or

Fixing typo in bigint

update misleading cli help msg for author

Find geth data store cross-platform.

Fixes #869