Fix documentation, requires tags to figure out version (#202)

* fix: Documentation requires tags to figure out version

When checking repository, include tags history to allow figuring out
the current package version.

Check the version shown at https://nrel.github.io/sup3r/ to understand
the issue.

* Simplifying installation using optional dependencies

* Using cached PIP

* Using Py-3.10 to build documentation

.github/workflows/gh_pages.yml

@@ -8,18 +8,19 @@ jobs:
  make-pages:
  runs-on: ubuntu-latest
  steps:
- - uses: actions/checkout@v3
+ - uses: actions/checkout@v4
+ with:
+ fetch-depth: 0
+ fetch-tags: true
  - name: select python version
- uses: actions/setup-python@v4
+ uses: actions/setup-python@v5
  with:
- python-version: 3.9
+ python-version: '3.10'
+ cache: 'pip'
  - name: install dependencies
  run: |
  python -m pip install --upgrade pip
- python -m pip install .
- python -m pip install sphinx
- python -m pip install sphinx_rtd_theme
- python -m pip install sphinx-click
+ python -m pip install .[doc]
  - name: build documentation
  run: |
  cd docs