cache in gh actions

.github/workflows/buildOnly.yml

@@ -11,6 +11,13 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: 3.7
+
+    - uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/publishAndBuild.yml

@@ -14,6 +14,12 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: 3.7
+    - uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.gitignore

@@ -1,3 +1,4 @@
 .DS_Store
 docs/index.md
-site/
+site/
+.venv/