Removed lines for installing flake8 and pytest and added flake8 as a dev dependency.

Author: RidleyLarsen

.github/workflows/pythonpackage.yml

@@ -26,12 +26,10 @@ jobs:
         rm get-poetry.py
     - name: Lint with flake8
       run: |
-        pip install flake8
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # the GitHub editor is 127 chars wide
         flake8 . --count --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
-        pip install pytest
         pytest

pyproject.toml

@@ -17,6 +17,7 @@ requests = "2.22.0"
 pytest = "4.6.6"
 jsonschema = "3.2.0"
 pytest-runner = "5.2"
+flake8 = "^3.7.9"
 
 [build-system]
 requires = ["poetry>=0.12"]