Use mamba to setup test environments (#256)

* Try using mamba to speedup installing dependencies

* Use mamba.bat command for windows

.github/workflows/test_pysteps.yml

@@ -37,18 +37,22 @@ jobs:
       - name: Setup Miniconda
         uses: conda-incubator/setup-miniconda@v2.0.0
         with:
-          auto-update-conda: true
           python-version: ${{ matrix.python-version }}
+          mamba-version: "*"
+          auto-update-conda: true
           channels: conda-forge
           channel-priority: flexible
           activate-environment: test-environment
 
       - name: Install dependencies
         env:
           PACKAGES: ${{env.MINIMAL_DEPENDENCIES}} ${{env.OPTIONAL_DEPENDENCIES}} ${{env.TEST_DEPENDENCIES}}
-          PYSTEPS_DATA_PATH: ${{github.workspace}}/pysteps_data
         run: |
-          conda install --quiet ${{env.PACKAGES}}
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            mamba.bat install --quiet ${{env.PACKAGES}}
+          else
+            mamba install --quiet ${{env.PACKAGES}}
+          fi
           pip install -U cookiecutter
 
       - name: Install pysteps for MacOS

.gitignore

@@ -80,8 +80,14 @@ venv.bak/
 .spyderproject
 .spyproject
 
+# VSCode
+.vscode
+
 # Rope project settings
 .ropeproject
 
 # mypy
 .mypy_cache/
+
+# Mac OS Stuff
+.DS_Store