add metadata parsing + removal from bytecode

[rmi7]

fixes #59

you can test it using this:

from crytic_compile import CryticCompile

def test_remove_metadata():
    crytic_compile_instance = CryticCompile(
        "0x6B175474E89094C44Da98b954EedeAC495271d0F", # solc 0.5.12
        compile_remove_metadata = True
    )

def test_get_metadata_of():
    crytic_compile_instance = CryticCompile(
        "0x6B175474E89094C44Da98b954EedeAC495271d0F", # solc 0.5.12
    )
    cu = list(crytic_compile_instance.compilation_units.values())[0]
    print(cu.metadata_of('Dai'))

test_remove_metadata()
test_get_metadata_of()

[lgtm-com]

This pull request introduces 1 alert when merging c1b1f59 into 1ca05b8 - view on LGTM.com

new alerts:

• 1 for Except block handles 'BaseException'

[lgtm-com]

This pull request introduces 1 alert when merging f5ac0c6 into 1ca05b8 - view on LGTM.com

new alerts:

• 1 for Except block handles 'BaseException'

[lgtm-com]

This pull request introduces 1 alert when merging 905cedd into 1ca05b8 - view on LGTM.com

new alerts:

• 1 for Except block handles 'BaseException'

[lgtm-com]

This pull request introduces 1 alert when merging d59e0b0 into 1ca05b8 - view on LGTM.com

new alerts:

• 1 for Except block handles 'BaseException'

[montyly]

This is great. Can we add the testcase in the CI?

[lgtm-com]

This pull request introduces 1 alert when merging f1d1c3e into a2c7147 - view on LGTM.com

new alerts:

• 1 for Except block handles 'BaseException'

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[rmi7]

This is great. Can we add the testcase in the CI?

good point' I'll look into it