Add support for solc 0.5.0

[dmuhs]

• py-solc Version: 3.2.0
• solc Version: 0.5.0
• Python Version: 3.6.7
• OS: linux

To keep up to date with the latest changes, it would be nice to have support for the latest solc version. On my machine that'd be 0.5.0+commit.1d4f565a.Linux.g++ - installed from the Ethereum PPA: deb http://ppa.launchpad.net/ethereum/ethereum/ubuntu bionic main

Background: Mythril is using py-solc as a wrapper to provide various solc versions as the contracts to scan require it. Having an up-to-date wrapper greatly helps us to keep our code clean from hacky workarounds. :slightly_smiling_face:

What was wrong?

Traceback (most recent call last):
  File "/home/spoons/diligence/mythril-classic/myth", line 9, in <module>
    mythril.interfaces.cli.main()
  File "/home/spoons/diligence/mythril-classic/mythril/interfaces/cli.py", line 282, in main
    enable_online_lookup=args.query_signature,
  File "/home/spoons/diligence/mythril-classic/mythril/mythril.py", line 120, in __init__
    self.solc_binary = self._init_solc_binary(solv)
  File "/home/spoons/diligence/mythril-classic/mythril/mythril.py", line 245, in _init_solc_binary
    solc.install_solc("v" + version)
  File "/home/spoons/diligence/mythril-classic/.tox/py36/lib/python3.6/site-packages/solc/install.py", line 508, in install_solc
    ', '.join(sorted(INSTALL_FUNCTIONS[platform].keys())),
ValueError: Installation of solidity==v0.5.0 is not supported.  Must be one of v0.4.1, v0.4.11, v0.4.12, v0.4.13, v0.4.14, v0.4.15, v0.4.16, v0.4.17, v0.4.18, v0.4.19, v0.4.2, v0.4.20, v0.4.21, v0.4.22, v0.4.23, v0.4.24, v0.4.25, v0.4.6, v0.4.7, v0.4.8, v0.4.9

Cute Animal Picture

[jwitos]

I think it would be fair to update README and specify which versions are supported by this library, information about >=0.4.2 seems to be very outdated

[iamdefinitelyahuman]

Per https://github.com/ethereum/py-solc/pull/65#issuecomment-448729689, this library has been deprecated. I am maintaining a fork, py-solc-x, that supports newer versions of the solc compiler.

[jwitos]

@iamdefinitelyahuman thank you for the update!