add requirements.txt that contains general reqs for installation

.github/workflows/tests.yml

@@ -1 +1 @@
-name: testson:  push:    branches: [main]  pull_request:    branches: [main]jobs:  build:    runs-on: ubuntu-latest    strategy:      matrix:        python-version: ["3.7", "3.8", "3.9", "3.10"]    steps:      - uses: actions/checkout@v3      - name: Set up Python ${{ matrix.python-version }}        uses: actions/setup-python@v4        with:          python-version: ${{ matrix.python-version }}      - name: Install dependencies        run: |          python -m pip install --upgrade pip          pip install flake8 pytest          pip install -r requirements_dev.txt      - name: Lint with flake8        run: |          # stop the build if there are Python syntax errors or undefined names          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics      - name: Test with pytest        run: |          pytest
+name: testson:  push:    branches: [main]  pull_request:    branches: [main]jobs:  build:    runs-on: ubuntu-latest    strategy:      matrix:        python-version: ["3.7", "3.8", "3.9", "3.10"]    steps:      - uses: actions/checkout@v3      - name: Set up Python ${{ matrix.python-version }}        uses: actions/setup-python@v4        with:          python-version: ${{ matrix.python-version }}      - name: Install dependencies        run: |          python -m pip install --upgrade pip          pip install flake8 pytest          pip install -r requirements.txt      - name: Lint with flake8        run: |          # stop the build if there are Python syntax errors or undefined names          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics      - name: Test with pytest        run: |          pytest

requirements.txt

@@ -0,0 +1 @@
+pandas>=1.2.0numpy>=1.20.0plotly>=5.3.0lmfit>=0.9arch>=4.7statsmodels>=0.12.0scipy>=1.5.0tensorflow>=2.0.0