Contract-deploy-tools

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* Add function to validate addresses as a callback for click

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* The minimum required web3 version is now 5.0.0b2
* contract-deploy-tools can now target a specific EVM version

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* Use -O instead of -o to enable optimization
* Print used version of solc in pytest plugin
* Add more options to deploy a contract (nonce, gas price, gas, signing key)
* Do not fail anymore if all gas has been used, but rely completely on the status field
* Add workaround for wrong fields in result of getTransactionReceipt in parity
* Add a contract deploy command
* Add option -o to specify output file
* Add options to minimize the output file
* Pin the target evm version to byzantium

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* Fix the dependencies

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* Add a pytest plugin that can be used when running tests

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* Fix missing bytecode in compiled contracts