Removed python 3.7 test

.github/workflows/tests.yml

@@ -6,22 +6,6 @@ on:
       - Development
 
 jobs:
-  p3_7:
-    name: Python 3.7.1
-    runs-on: ubuntu-20.04
-    steps:
-      - uses: actions/checkout@v2
-        with:
-          fetch-depth: 0
-      - uses: actions/setup-python@v4
-        with:
-          python-version: 3.7.1
-          architecture: x64
-          cache: 'pip'
-          cache-dependency-path: requirements.txt
-      - run: pip install -r requirements.txt
-      - run: python3 -m unittest discover -s ./tests -p '*.py'
-
   p3_8:
     name: Python 3.8.0
     runs-on: ubuntu-20.04

CONTRIBUTING.md

@@ -25,7 +25,7 @@ python3 -m unittest discover -v -s './tests' -p '*_test.py'
 ## Styling guide
 The code of MIND is written in such way that it follows the following rules. Your code should too.
 
-1. Compatible with python 3.7 .
+1. Compatible with python 3.8 .
 2. Tabs (4 space size) are used for indentation.
 3. Use type hints as much as possible, though don't if it requires importing extra functions or classes (except for the `typing` library).
 4. Each function in the backend needs a doc string describing the function, what the inputs are, what errors could be raised from within the function and what the output is.