[misc] Drop support for Python 3.6 (#28)

Author: gauravagrwal

.github/workflows/deploy.yml

@@ -10,10 +10,10 @@ jobs:
     environment: deploy
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python 3.6
+    - name: Set up Python 3.7
       uses: actions/setup-python@v2
       with:
-        python-version: 3.6
+        python-version: 3.7
     - name: Package RepoBee
       run: |
         python -m pip install --upgrade pip wheel

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9]
         exclude:
           - os: macos-latest
             python-version: 3.7

README.md

@@ -2,7 +2,7 @@
 [![Build Status](https://github.com/repobee/repobee-feedback/actions/workflows/tests.yml/badge.svg)](https://github.com/repobee/repobee-feedback/actions/workflows/tests.yml)
 [![Code Coverage](https://codecov.io/gh/repobee/repobee-feedback/branch/master/graph/badge.svg)](https://codecov.io/gh/repobee/repobee-feedback)
 [![PyPi Version](https://badge.fury.io/py/repobee-feedback.svg)](https://badge.fury.io/py/repobee-feedback)
-![Supported Python Versions](https://img.shields.io/badge/python-3.6%7C3.7%7C3.8-blue)
+![Supported Python Versions](https://img.shields.io/badge/python-3.7%7C3.8-blue)
 ![Supported Platforms](https://img.shields.io/badge/platforms-Linux%2C%20macOS-blue.svg)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE)
 [![Code Style: Black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)

setup.py

@@ -42,12 +42,10 @@
     extras_require=dict(TEST=test_requirements),
     include_package_data=True,
     zip_safe=False,
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     classifiers=[
         "Development Status :: 3 - Alpha",
         "Intended Audience :: Education",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: Implementation :: CPython",