macOS fix: Check for correct version of flake8 to avoid spurious warnings. The brew installed flake8 version is Python 2 based and does not work.
macOS fix: Check for correct version of flake8 to avoid spurious warnings. The brew installed flake8 version is Python 2 based and does not work.

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin