Merge pull request #99 from cclauss/patch-3

CircleCI: Upgrade to Python 3.8

Author: StoicLoofah

.circleci/config.yml

@@ -12,7 +12,7 @@ build_and_test: &build_and_test_steps
 jobs:
   StyleCheck:
     docker:
-      - image: circleci/python:3.7
+      - image: circleci/python:3.8
     steps:
       - checkout
       - run: sudo pip install flake8 black
@@ -31,7 +31,7 @@ jobs:
 
   Python3:
     docker:
-      - image: circleci/python:3.7
+      - image: circleci/python:3.8
     steps: *build_and_test_steps