Continuous integration testing for all supported python versions

[alejandrogallo]

In the readme you mention support for python3.6+ as well as in the pypi package https://pypi.org/project/tesliper/ and setup.py file, however the testing is done only for python3.6, could you update the testing in order to comply with the targeted versions?

Using gihtub actions this can be done by adapting a yaml file like this one

name: CI
on: [push]
jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        python-version: ['3.5', '3.6', '3.7', '3.8', '3.9', '3.10']

    steps:
    - uses: actions/checkout@v2
    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}
    - name: Install
      run: |
        python -m pip install -U pip
        python -m pip install -r requirements.txt
        python -m pip install pytest
        python -m pip install pytest-cov
        python -m pip install hypothesis
        python -m pip install coveralls
        ./tools/ci-install.sh
      shell: bash
    - name: Run tests
      run: |
        python -m pytest --cov=tesliper --cov-config=.coveragerc test
      shell: bash

[mishioo]

Good point, I'll update CI config.

[mishioo]

For a little background: I've migrated CI tests to Appveyor after TravisCI changed its policy for the free plan. I've only set it up with basic tests to get it running quickly and forgot to update it, apparently. Previously the project was tested on Python versions 3.6-3.9, hence the mention of support for python3.6+.