Switch from setup.py to pyproject.toml (AR-1624) (#1459)

* Switch to pyproject.toml

* pypa/setuptools#3197 (comment)

* Remove no-self-use

* Update package build

* Update pyproject.toml

* Fix module not found issue

* Fix formatting 1

Co-authored-by: Samuel Jones <samjones714@gmail.com>

* Fix formatting 2

Co-authored-by: Samuel Jones <samjones714@gmail.com>

* Fix formatting 3

Co-authored-by: Samuel Jones <samjones714@gmail.com>

Co-authored-by: Samuel Jones <samjones714@gmail.com>

Author: james0209

.github/workflows/run-tests.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Build package for publishing
         if: ${{ github.ref == 'refs/heads/main' }}
-        run: python3 -m pip install wheel && python3 setup.py sdist bdist_wheel
+        run: python3 -m pip install --upgrade build wheel && python -m build
 
       - name: Publish distribution 📦 to PyPI
         if: ${{ github.ref == 'refs/heads/main' }}
@@ -66,7 +66,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.6", "3.8"]
+        python-version: ["3.8"]
 
     steps:
       - uses: actions/checkout@v2