ci: add minimum-versions and pre-release-versions

.github/workflows/continuous-integration.yml

@@ -60,6 +60,62 @@ jobs:
         run: pip install -e '.[all]'
       - name: Test again
         run: ./scripts/test
+  minimum-versions:
+    name: minimum-versions
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up pip cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements-min.txt', '**/requirements-dev.txt') }}
+          restore-keys: ${{ runner.os }}-pip-
+      - name: Set up Conda with Python ${{ matrix.python-version }}
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
+      - name: Update Conda's environemnt
+        run: conda env update -f environment.yml -n test
+      - name: Install minimum requirements
+        run: pip install -r requirements-min.txt
+      - name: Install development dependencies
+        run: pip install -r requirements-dev.txt
+      - name: Run tests
+        run: scripts/test
+  pre-release-versions:
+    name: pre-release-versions
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up pip cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/setup.cfg', '**/requirements-dev.txt') }}
+          restore-keys: ${{ runner.os }}-pip-
+      - name: Set up Conda with Python ${{ matrix.python-version }}
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
+      - name: Update Conda's environemnt
+        run: conda env update -f environment.yml -n test
+      - name: Install package
+        run: pip install .
+      - name: Install development dependencies
+        run: pip install -r requirements-dev.txt
+      - name: Install pre-release versions of rasterio and pystac
+        run: pip install -U --pre pystac rasterio
+      - name: Run tests
+        run: scripts/test
   docker:
     name: docker
     needs: