specify the python build is in 3.8 (#30)

* updated readme

* updated some documentation & .gitignore

* moved examples to doc

* rephrase

* updated text

* updated documentation & version number

* updated versioning mechanism

* updated version location, can read from package

* remove about

* removed isreleased

* updated version

* updated publish python package

* Update publish-python-package.yml

* Update publish-python-package.yml

* updated python package to use 3.8

.github/workflows/publish-python-package.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: '3.x'
+        python-version: '3.8'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip