Extend common_statements

[Jasha10]

This PR is to close #159, adding support for users to write their own common_statements.

Commits:

• b0969ab: revert Read config from pyproject.toml #152
• 4bd3bfd: add test for existing common_statements
• 02b969e: Enable custom config to overwrite common_statements
• 03e31dd: CLI to read config from pyproject.toml using maison
• 538872d: document pyproject.toml tool.autoimport table

Checklist

• Add test cases to all the changes you introduce #d5e38a37
• Update the documentation for the changes #30e384bf

[coveralls]

Pull Request Test Coverage Report for Build 1486867596

• 17 of 17 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.4%) to 95.437%

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Totals
Change from base Build 1371775256:	-0.4%
Covered Lines:	251
Relevant Lines:	263

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💛 - Coveralls

[Jasha10]

Running make update locally failed for me:

$ make update
...
rm requirements-dev.txt
touch requirements-dev.txt
pip-compile -Ur --allow-unsafe requirements-dev.in --output-file requirements-dev.txt
Could not find a version that matches typing-extensions==3.10.0.2,==4.0.0,>=3.10.0,>=3.7.4 (from -c requirements.txt (line 27))
Tried: 3.6.2, 3.6.2, 3.6.2.1, 3.6.2.1, 3.6.5, 3.6.5, 3.6.6, 3.6.6, 3.7.2, 3.7.2, 3.7.4, 3.7.4, 3.7.4.1, 3.7.4.1, 3.7.4.2, 3.7.4.2, 3.7.4.3, 3.7.4.3, 3.10.0.0, 3.10.0.0, 3.10.0.1, 3.10.0.1, 3.10.0.2, 3.10.0.2, 4.0.0, 4.0.0
There are incompatible versions in the resolved dependencies:
  typing-extensions==3.10.0.2 (from -c docs/requirements.txt (line 125))
  typing-extensions==4.0.0 (from -c requirements.txt (line 27))
  typing-extensions>=3.10.0 (from pylint==2.11.1->-r requirements-dev.in (line 33))
  typing-extensions>=3.7.4 (from mypy==0.910->-r requirements-dev.in (line 43))
  typing-extensions>=3.10.0.0 (from black==21.11b1->-r requirements-dev.in (line 47))
Makefile:14: recipe for target 'update' failed
make: *** [update] Error 2

[lyz-code]

Thank you for the contribution, it's always lovely to see when developers follow the code style without any need to do any comment.

Your implementation looks wonderful, I just have some minor suggestions for you to evaluate

[lyz-code]

Regarding the make update, I know it's broken :(, I have many of my projects broken in the same way, and I'm figuring out a way to manage these cases automatically with autodev, but it's still not there.

The solution of the dependency break is to locate the packages in docs/requirements.in that don't support typing-extensions==4.0.0 see if there is an issue open that monitors why, and add the typing-extensions < 4.0.0 in the setup.py with the comment to the open issue, so we can remove that pin once it's solved.

It's a lot of unrelated work for this PR, so it's fine if you leave it broken

[Jasha10]

... locate the packages in docs/requirements.in that don't support typing-extensions==4.0.0.

It looks like pydantic has a pin on typing-extensions==3.10.0.2.

They do not appear to have an open issue about this.

[lyz-code]

Thank you so much for the contribution!